| Value | Category | Cases | |
|---|---|---|---|
| 1923 | 1 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    |
| 1924 | 2 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    |
| 1926 | 1 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    |
| 1927 | 2 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    |
| 1928 | 1 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    |
| 1930 | 5 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 1931 | 2 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    |
| 1932 | 5 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 1933 | 5 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 1934 | 8 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 1935 | 6 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 1936 | 6 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 1937 | 9 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 1938 | 8 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 1939 | 10 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 1940 | 11 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 1941 | 14 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 1942 | 8 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 1943 | 9 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    |
| 1944 | 20 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 1945 | 19 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    |
| 1946 | 25 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 1947 | 23 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 1948 | 15 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    |
| 1949 | 28 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 1950 | 30 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    |
| 1951 | 24 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    |
| 1952 | 35 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 1953 | 39 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 1954 | 41 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 1955 | 44 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 1956 | 40 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 1957 | 37 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 1958 | 50 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    |
| 1959 | 38 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             | 
                                                        
                    |
| 1960 | 67 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    |
| 1961 | 49 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    |
| 1962 | 52 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    |
| 1963 | 49 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    |
| 1964 | 57 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 1965 | 61 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 1966 | 58 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 1967 | 73 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    |
| 1968 | 59 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 1969 | 46 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    |
| 1970 | 74 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    |
| 1971 | 57 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 1972 | 56 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 1973 | 53 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    |
| 1974 | 52 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    |
| 1975 | 56 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 1976 | 53 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    |
| 1977 | 56 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    |
| 1978 | 74 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    |
| 1979 | 101 | 
                                                                 
                                    
                                    1.6%
                                 
                                                             | 
                                                        
                    |
| 1980 | 116 | 
                                                                 
                                    
                                    1.8%
                                 
                                                             | 
                                                        
                    |
| 1981 | 101 | 
                                                                 
                                    
                                    1.6%
                                 
                                                             | 
                                                        
                    |
| 1982 | 97 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    |
| 1983 | 123 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    |
| 1984 | 96 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    |
| 1985 | 99 | 
                                                                 
                                    
                                    1.6%
                                 
                                                             | 
                                                        
                    |
| 1986 | 116 | 
                                                                 
                                    
                                    1.8%
                                 
                                                             | 
                                                        
                    |
| 1987 | 112 | 
                                                                 
                                    
                                    1.8%
                                 
                                                             | 
                                                        
                    |
| 1988 | 110 | 
                                                                 
                                    
                                    1.7%
                                 
                                                             | 
                                                        
                    |
| 1989 | 81 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 1990 | 110 | 
                                                                 
                                    
                                    1.7%
                                 
                                                             | 
                                                        
                    |
| 1991 | 81 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 1992 | 103 | 
                                                                 
                                    
                                    1.6%
                                 
                                                             | 
                                                        
                    |
| 1993 | 82 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 1994 | 84 | 
                                                                 
                                    
                                    1.3%
                                 
                                                             | 
                                                        
                    |
| 1995 | 95 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    |
| 1996 | 76 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    |
| 1997 | 68 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    |
| 1998 | 102 | 
                                                                 
                                    
                                    1.6%
                                 
                                                             | 
                                                        
                    |
| 1999 | 79 | 
                                                                 
                                    
                                    1.2%
                                 
                                                             | 
                                                        
                    |
| 2000 | 89 | 
                                                                 
                                    
                                    1.4%
                                 
                                                             | 
                                                        
                    |
| 2001 | 65 | 
                                                                 
                                    
                                    1%
                                 
                                                             | 
                                                        
                    |
| 2002 | 123 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    |
| 2003 | 108 | 
                                                                 
                                    
                                    1.7%
                                 
                                                             | 
                                                        
                    |
| 2004 | 122 | 
                                                                 
                                    
                                    1.9%
                                 
                                                             | 
                                                        
                    |
| 2005 | 127 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 2006 | 145 | 
                                                                 
                                    
                                    2.3%
                                 
                                                             | 
                                                        
                    |
| 2007 | 167 | 
                                                                 
                                    
                                    2.6%
                                 
                                                             | 
                                                        
                    |
| 2008 | 140 | 
                                                                 
                                    
                                    2.2%
                                 
                                                             | 
                                                        
                    |
| 2009 | 153 | 
                                                                 
                                    
                                    2.4%
                                 
                                                             | 
                                                        
                    |
| 2010 | 130 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 2011 | 142 | 
                                                                 
                                    
                                    2.2%
                                 
                                                             | 
                                                        
                    |
| 2012 | 135 | 
                                                                 
                                    
                                    2.1%
                                 
                                                             | 
                                                        
                    |
| 2013 | 141 | 
                                                                 
                                    
                                    2.2%
                                 
                                                             | 
                                                        
                    |
| 2014 | 132 | 
                                                                 
                                    
                                    2.1%
                                 
                                                             | 
                                                        
                    |
| 2015 | 135 | 
                                                                 
                                    
                                    2.1%
                                 
                                                             | 
                                                        
                    |
| 2016 | 133 | 
                                                                 
                                    
                                    2.1%
                                 
                                                             | 
                                                        
                    |
| 2017 | 128 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    |
| 2018 | 134 | 
                                                                 
                                    
                                    2.1%
                                 
                                                             | 
                                                        
                    |
| 2019 | 108 | 
                                                                 
                                    
                                    1.7%
                                 
                                                             | 
                                                        
                    |
| 9999 | Don't know | 39 | 
                                                                 
                                    
                                    0.6%
                                 
                                                             |