Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 2 |
1.3%
|
1800 | 1 |
0.7%
|
|
1865 | 1 |
0.7%
|
|
1888 | 1 |
0.7%
|
|
1893 | 1 |
0.7%
|
|
1920 | 1 |
0.7%
|
|
1922 | 1 |
0.7%
|
|
1926 | 1 |
0.7%
|
|
1940 | 1 |
0.7%
|
|
1953 | 1 |
0.7%
|
|
1955 | 1 |
0.7%
|
|
1961 | 1 |
0.7%
|
|
1963 | 3 |
2%
|
|
1964 | 1 |
0.7%
|
|
1966 | 1 |
0.7%
|
|
1969 | 1 |
0.7%
|
|
1971 | 1 |
0.7%
|
|
1972 | 1 |
0.7%
|
|
1973 | 3 |
2%
|
|
1974 | 1 |
0.7%
|
|
1975 | 3 |
2%
|
|
1978 | 2 |
1.3%
|
|
1979 | 1 |
0.7%
|
|
1980 | 5 |
3.3%
|
|
1981 | 1 |
0.7%
|
|
1982 | 1 |
0.7%
|
|
1983 | 5 |
3.3%
|
|
1984 | 2 |
1.3%
|
|
1985 | 2 |
1.3%
|
|
1986 | 2 |
1.3%
|
|
1987 | 3 |
2%
|
|
1988 | 2 |
1.3%
|
|
1989 | 3 |
2%
|
|
1990 | 5 |
3.3%
|
|
1991 | 2 |
1.3%
|
|
1992 | 1 |
0.7%
|
|
1993 | 2 |
1.3%
|
|
1995 | 4 |
2.6%
|
|
1996 | 4 |
2.6%
|
|
1997 | 3 |
2%
|
|
1998 | 5 |
3.3%
|
|
1999 | 6 |
3.9%
|
|
2000 | 6 |
3.9%
|
|
2001 | 4 |
2.6%
|
|
2002 | 1 |
0.7%
|
|
2003 | 3 |
2%
|
|
2004 | 4 |
2.6%
|
|
2005 | 4 |
2.6%
|
|
2006 | 3 |
2%
|
|
2007 | 1 |
0.7%
|
|
2008 | 4 |
2.6%
|
|
2009 | 3 |
2%
|
|
2010 | 1 |
0.7%
|
|
2011 | 6 |
3.9%
|
|
2012 | 2 |
1.3%
|
|
2013 | 4 |
2.6%
|
|
2014 | 2 |
1.3%
|
|
2015 | 4 |
2.6%
|
|
2016 | 1 |
0.7%
|
|
2017 | 5 |
3.3%
|
|
2019 | 4 |
2.6%
|
|
2020 | 1 |
0.7%
|
|
2021 | 1 |
0.7%
|