Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 1 |
0.2%
|
-7 | Never regiestered (spontaneous) | 0 |
0%
|
1935 | 1 |
0.2%
|
|
1948 | 1 |
0.2%
|
|
1960 | 3 |
0.5%
|
|
1965 | 1 |
0.2%
|
|
1971 | 1 |
0.2%
|
|
1972 | 1 |
0.2%
|
|
1974 | 1 |
0.2%
|
|
1975 | 1 |
0.2%
|
|
1977 | 1 |
0.2%
|
|
1979 | 2 |
0.3%
|
|
1980 | 2 |
0.3%
|
|
1982 | 3 |
0.5%
|
|
1983 | 1 |
0.2%
|
|
1984 | 1 |
0.2%
|
|
1985 | 2 |
0.3%
|
|
1986 | 1 |
0.2%
|
|
1987 | 2 |
0.3%
|
|
1988 | 2 |
0.3%
|
|
1989 | 3 |
0.5%
|
|
1990 | 8 |
1.3%
|
|
1991 | 2 |
0.3%
|
|
1992 | 1 |
0.2%
|
|
1993 | 6 |
1%
|
|
1994 | 7 |
1.1%
|
|
1995 | 4 |
0.7%
|
|
1996 | 3 |
0.5%
|
|
1997 | 4 |
0.7%
|
|
1998 | 6 |
1%
|
|
1999 | 3 |
0.5%
|
|
2000 | 18 |
2.9%
|
|
2001 | 8 |
1.3%
|
|
2002 | 9 |
1.5%
|
|
2003 | 8 |
1.3%
|
|
2004 | 11 |
1.8%
|
|
2005 | 16 |
2.6%
|
|
2006 | 19 |
3.1%
|
|
2007 | 11 |
1.8%
|
|
2008 | 13 |
2.1%
|
|
2009 | 20 |
3.3%
|
|
2010 | 29 |
4.7%
|
|
2011 | 22 |
3.6%
|
|
2012 | 29 |
4.7%
|
|
2013 | 22 |
3.6%
|
|
2014 | 32 |
5.2%
|
|
2015 | 61 |
9.9%
|
|
2016 | 24 |
3.9%
|
|
2017 | 36 |
5.9%
|
|
2018 | 40 |
6.5%
|
|
2019 | 30 |
4.9%
|
|
2020 | 38 |
6.2%
|
|
2021 | 21 |
3.4%
|
|
2022 | 17 |
2.8%
|
|
2023 | 6 |
1%
|