Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 0 |
0%
|
-7 | Never regiestered (spontaneous) | 0 |
0%
|
1926 | 2 |
0.6%
|
|
1929 | 1 |
0.3%
|
|
1932 | 1 |
0.3%
|
|
1936 | 2 |
0.6%
|
|
1938 | 1 |
0.3%
|
|
1940 | 1 |
0.3%
|
|
1941 | 1 |
0.3%
|
|
1943 | 1 |
0.3%
|
|
1947 | 1 |
0.3%
|
|
1950 | 1 |
0.3%
|
|
1953 | 1 |
0.3%
|
|
1955 | 1 |
0.3%
|
|
1956 | 2 |
0.6%
|
|
1957 | 1 |
0.3%
|
|
1959 | 1 |
0.3%
|
|
1960 | 1 |
0.3%
|
|
1961 | 1 |
0.3%
|
|
1963 | 1 |
0.3%
|
|
1964 | 1 |
0.3%
|
|
1966 | 1 |
0.3%
|
|
1968 | 2 |
0.6%
|
|
1970 | 2 |
0.6%
|
|
1972 | 1 |
0.3%
|
|
1973 | 2 |
0.6%
|
|
1976 | 1 |
0.3%
|
|
1977 | 3 |
0.8%
|
|
1978 | 1 |
0.3%
|
|
1979 | 1 |
0.3%
|
|
1983 | 1 |
0.3%
|
|
1987 | 1 |
0.3%
|
|
1988 | 1 |
0.3%
|
|
1989 | 1 |
0.3%
|
|
1990 | 2 |
0.6%
|
|
1991 | 9 |
2.5%
|
|
1992 | 8 |
2.2%
|
|
1993 | 15 |
4.2%
|
|
1994 | 10 |
2.8%
|
|
1995 | 18 |
5%
|
|
1996 | 10 |
2.8%
|
|
1997 | 14 |
3.9%
|
|
1998 | 16 |
4.4%
|
|
1999 | 10 |
2.8%
|
|
2000 | 2 |
0.6%
|
|
2001 | 11 |
3.1%
|
|
2002 | 16 |
4.4%
|
|
2003 | 19 |
5.3%
|
|
2004 | 21 |
5.8%
|
|
2005 | 11 |
3.1%
|
|
2006 | 18 |
5%
|
|
2007 | 14 |
3.9%
|
|
2008 | 15 |
4.2%
|
|
2009 | 12 |
3.3%
|
|
2010 | 10 |
2.8%
|
|
2011 | 14 |
3.9%
|
|
2012 | 10 |
2.8%
|
|
2013 | 9 |
2.5%
|
|
2014 | 12 |
3.3%
|
|
2015 | 4 |
1.1%
|
|
2016 | 7 |
1.9%
|
|
2017 | 3 |
0.8%
|