Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 5 |
0.5%
|
-7 | Never regiestered (spontaneous) | 0 |
0%
|
1880 | 1 |
0.1%
|
|
1905 | 1 |
0.1%
|
|
1910 | 1 |
0.1%
|
|
1918 | 1 |
0.1%
|
|
1919 | 1 |
0.1%
|
|
1935 | 1 |
0.1%
|
|
1944 | 1 |
0.1%
|
|
1946 | 1 |
0.1%
|
|
1947 | 1 |
0.1%
|
|
1949 | 2 |
0.2%
|
|
1955 | 1 |
0.1%
|
|
1957 | 1 |
0.1%
|
|
1959 | 1 |
0.1%
|
|
1960 | 4 |
0.4%
|
|
1961 | 1 |
0.1%
|
|
1962 | 2 |
0.2%
|
|
1964 | 1 |
0.1%
|
|
1965 | 4 |
0.4%
|
|
1967 | 3 |
0.3%
|
|
1968 | 3 |
0.3%
|
|
1969 | 2 |
0.2%
|
|
1970 | 5 |
0.5%
|
|
1972 | 4 |
0.4%
|
|
1973 | 5 |
0.5%
|
|
1974 | 4 |
0.4%
|
|
1975 | 2 |
0.2%
|
|
1976 | 2 |
0.2%
|
|
1977 | 7 |
0.7%
|
|
1978 | 6 |
0.6%
|
|
1979 | 4 |
0.4%
|
|
1980 | 10 |
1%
|
|
1981 | 3 |
0.3%
|
|
1982 | 5 |
0.5%
|
|
1983 | 5 |
0.5%
|
|
1984 | 7 |
0.7%
|
|
1985 | 5 |
0.5%
|
|
1986 | 7 |
0.7%
|
|
1987 | 6 |
0.6%
|
|
1988 | 8 |
0.8%
|
|
1989 | 12 |
1.2%
|
|
1990 | 34 |
3.3%
|
|
1991 | 7 |
0.7%
|
|
1992 | 7 |
0.7%
|
|
1993 | 8 |
0.8%
|
|
1994 | 20 |
2%
|
|
1995 | 18 |
1.8%
|
|
1996 | 26 |
2.5%
|
|
1997 | 16 |
1.6%
|
|
1998 | 23 |
2.2%
|
|
1999 | 20 |
2%
|
|
2000 | 32 |
3.1%
|
|
2001 | 16 |
1.6%
|
|
2002 | 14 |
1.4%
|
|
2003 | 18 |
1.8%
|
|
2004 | 34 |
3.3%
|
|
2005 | 23 |
2.2%
|
|
2006 | 30 |
2.9%
|
|
2007 | 24 |
2.3%
|
|
2008 | 22 |
2.1%
|
|
2009 | 22 |
2.1%
|
|
2010 | 38 |
3.7%
|
|
2011 | 27 |
2.6%
|
|
2012 | 34 |
3.3%
|
|
2013 | 29 |
2.8%
|
|
2014 | 44 |
4.3%
|
|
2015 | 47 |
4.6%
|
|
2016 | 45 |
4.4%
|
|
2017 | 38 |
3.7%
|
|
2018 | 52 |
5.1%
|
|
2019 | 46 |
4.5%
|
|
2020 | 36 |
3.5%
|
|
2021 | 23 |
2.2%
|
|
2022 | 4 |
0.4%
|
|
2023 | 1 |
0.1%
|