| Value | Category | Cases | |
|---|---|---|---|
| 1923 | 2 | 
                                    
                                    0%
                                 | |
| 1924 | 2 | 
                                    
                                    0%
                                 | |
| 1925 | 2 | 
                                    
                                    0%
                                 | |
| 1926 | 7 | 
                                    
                                    0%
                                 | |
| 1927 | 6 | 
                                    
                                    0%
                                 | |
| 1928 | 4 | 
                                    
                                    0%
                                 | |
| 1929 | 9 | 
                                    
                                    0.1%
                                 | |
| 1930 | 18 | 
                                    
                                    0.1%
                                 | |
| 1931 | 16 | 
                                    
                                    0.1%
                                 | |
| 1932 | 15 | 
                                    
                                    0.1%
                                 | |
| 1933 | 28 | 
                                    
                                    0.2%
                                 | |
| 1934 | 30 | 
                                    
                                    0.2%
                                 | |
| 1935 | 37 | 
                                    
                                    0.2%
                                 | |
| 1936 | 48 | 
                                    
                                    0.3%
                                 | |
| 1937 | 47 | 
                                    
                                    0.3%
                                 | |
| 1938 | 51 | 
                                    
                                    0.3%
                                 | |
| 1939 | 50 | 
                                    
                                    0.3%
                                 | |
| 1940 | 79 | 
                                    
                                    0.5%
                                 | |
| 1941 | 84 | 
                                    
                                    0.5%
                                 | |
| 1942 | 84 | 
                                    
                                    0.5%
                                 | |
| 1943 | 96 | 
                                    
                                    0.6%
                                 | |
| 1944 | 86 | 
                                    
                                    0.6%
                                 | |
| 1945 | 87 | 
                                    
                                    0.6%
                                 | |
| 1946 | 91 | 
                                    
                                    0.6%
                                 | |
| 1947 | 122 | 
                                    
                                    0.8%
                                 | |
| 1948 | 146 | 
                                    
                                    0.9%
                                 | |
| 1949 | 120 | 
                                    
                                    0.8%
                                 | |
| 1950 | 138 | 
                                    
                                    0.9%
                                 | |
| 1951 | 166 | 
                                    
                                    1.1%
                                 | |
| 1952 | 193 | 
                                    
                                    1.2%
                                 | |
| 1953 | 212 | 
                                    
                                    1.4%
                                 | |
| 1954 | 187 | 
                                    
                                    1.2%
                                 | |
| 1955 | 208 | 
                                    
                                    1.3%
                                 | |
| 1956 | 226 | 
                                    
                                    1.4%
                                 | |
| 1957 | 204 | 
                                    
                                    1.3%
                                 | |
| 1958 | 211 | 
                                    
                                    1.3%
                                 | |
| 1959 | 227 | 
                                    
                                    1.5%
                                 | |
| 1960 | 223 | 
                                    
                                    1.4%
                                 | |
| 1961 | 205 | 
                                    
                                    1.3%
                                 | |
| 1962 | 215 | 
                                    
                                    1.4%
                                 | |
| 1963 | 187 | 
                                    
                                    1.2%
                                 | |
| 1964 | 204 | 
                                    
                                    1.3%
                                 | |
| 1965 | 204 | 
                                    
                                    1.3%
                                 | |
| 1966 | 200 | 
                                    
                                    1.3%
                                 | |
| 1967 | 170 | 
                                    
                                    1.1%
                                 | |
| 1968 | 166 | 
                                    
                                    1.1%
                                 | |
| 1969 | 163 | 
                                    
                                    1%
                                 | |
| 1970 | 163 | 
                                    
                                    1%
                                 | |
| 1971 | 148 | 
                                    
                                    0.9%
                                 | |
| 1972 | 157 | 
                                    
                                    1%
                                 | |
| 1973 | 161 | 
                                    
                                    1%
                                 | |
| 1974 | 169 | 
                                    
                                    1.1%
                                 | |
| 1975 | 210 | 
                                    
                                    1.3%
                                 | |
| 1976 | 181 | 
                                    
                                    1.2%
                                 | |
| 1977 | 202 | 
                                    
                                    1.3%
                                 | |
| 1978 | 205 | 
                                    
                                    1.3%
                                 | |
| 1979 | 221 | 
                                    
                                    1.4%
                                 | |
| 1980 | 245 | 
                                    
                                    1.6%
                                 | |
| 1981 | 228 | 
                                    
                                    1.5%
                                 | |
| 1982 | 253 | 
                                    
                                    1.6%
                                 | |
| 1983 | 266 | 
                                    
                                    1.7%
                                 | |
| 1984 | 260 | 
                                    
                                    1.7%
                                 | |
| 1985 | 264 | 
                                    
                                    1.7%
                                 | |
| 1986 | 308 | 
                                    
                                    2%
                                 | |
| 1987 | 288 | 
                                    
                                    1.8%
                                 | |
| 1988 | 241 | 
                                    
                                    1.5%
                                 | |
| 1989 | 228 | 
                                    
                                    1.5%
                                 | |
| 1990 | 229 | 
                                    
                                    1.5%
                                 | |
| 1991 | 205 | 
                                    
                                    1.3%
                                 | |
| 1992 | 224 | 
                                    
                                    1.4%
                                 | |
| 1993 | 190 | 
                                    
                                    1.2%
                                 | |
| 1994 | 182 | 
                                    
                                    1.2%
                                 | |
| 1995 | 166 | 
                                    
                                    1.1%
                                 | |
| 1996 | 150 | 
                                    
                                    1%
                                 | |
| 1997 | 147 | 
                                    
                                    0.9%
                                 | |
| 1998 | 183 | 
                                    
                                    1.2%
                                 | |
| 1999 | 132 | 
                                    
                                    0.8%
                                 | |
| 2000 | 154 | 
                                    
                                    1%
                                 | |
| 2001 | 150 | 
                                    
                                    1%
                                 | |
| 2002 | 148 | 
                                    
                                    0.9%
                                 | |
| 2003 | 150 | 
                                    
                                    1%
                                 | |
| 2004 | 165 | 
                                    
                                    1.1%
                                 | |
| 2005 | 137 | 
                                    
                                    0.9%
                                 | |
| 2006 | 166 | 
                                    
                                    1.1%
                                 | |
| 2007 | 176 | 
                                    
                                    1.1%
                                 | |
| 2008 | 186 | 
                                    
                                    1.2%
                                 | |
| 2009 | 185 | 
                                    
                                    1.2%
                                 | |
| 2010 | 226 | 
                                    
                                    1.4%
                                 | |
| 2011 | 215 | 
                                    
                                    1.4%
                                 | |
| 2012 | 250 | 
                                    
                                    1.6%
                                 | |
| 2013 | 248 | 
                                    
                                    1.6%
                                 | |
| 2014 | 339 | 
                                    
                                    2.2%
                                 | |
| 2015 | 329 | 
                                    
                                    2.1%
                                 | |
| 2016 | 302 | 
                                    
                                    1.9%
                                 | |
| 2017 | 308 | 
                                    
                                    2%
                                 | |
| 2018 | 278 | 
                                    
                                    1.8%
                                 | |
| 2019 | 9 | 
                                    
                                    0.1%
                                 | |
| 9998 | DK | 29 | 
                                    
                                    0.2%
                                 | 
| 9999 | NO RESPONSE | 3 | 
                                    
                                    0%
                                 |