| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 427 |
14.5%
|
| -7 | Never regiestered (spontaneous) | 0 |
0%
|
| 1800 | 1 |
0%
|
|
| 1885 | 1 |
0%
|
|
| 1910 | 2 |
0.1%
|
|
| 1922 | 1 |
0%
|
|
| 1925 | 2 |
0.1%
|
|
| 1926 | 1 |
0%
|
|
| 1930 | 1 |
0%
|
|
| 1937 | 1 |
0%
|
|
| 1946 | 1 |
0%
|
|
| 1947 | 1 |
0%
|
|
| 1950 | 3 |
0.1%
|
|
| 1951 | 1 |
0%
|
|
| 1952 | 1 |
0%
|
|
| 1955 | 1 |
0%
|
|
| 1957 | 1 |
0%
|
|
| 1960 | 3 |
0.1%
|
|
| 1964 | 1 |
0%
|
|
| 1965 | 3 |
0.1%
|
|
| 1967 | 5 |
0.2%
|
|
| 1968 | 1 |
0%
|
|
| 1969 | 2 |
0.1%
|
|
| 1970 | 9 |
0.3%
|
|
| 1971 | 3 |
0.1%
|
|
| 1972 | 5 |
0.2%
|
|
| 1973 | 2 |
0.1%
|
|
| 1974 | 4 |
0.1%
|
|
| 1975 | 12 |
0.4%
|
|
| 1976 | 11 |
0.4%
|
|
| 1977 | 4 |
0.1%
|
|
| 1978 | 3 |
0.1%
|
|
| 1980 | 21 |
0.7%
|
|
| 1981 | 1 |
0%
|
|
| 1982 | 10 |
0.3%
|
|
| 1983 | 11 |
0.4%
|
|
| 1984 | 9 |
0.3%
|
|
| 1985 | 17 |
0.6%
|
|
| 1986 | 12 |
0.4%
|
|
| 1987 | 11 |
0.4%
|
|
| 1988 | 10 |
0.3%
|
|
| 1989 | 15 |
0.5%
|
|
| 1990 | 55 |
1.9%
|
|
| 1991 | 11 |
0.4%
|
|
| 1992 | 25 |
0.8%
|
|
| 1993 | 18 |
0.6%
|
|
| 1994 | 28 |
0.9%
|
|
| 1995 | 39 |
1.3%
|
|
| 1996 | 31 |
1%
|
|
| 1997 | 35 |
1.2%
|
|
| 1998 | 28 |
0.9%
|
|
| 1999 | 25 |
0.8%
|
|
| 2000 | 169 |
5.7%
|
|
| 2001 | 43 |
1.5%
|
|
| 2002 | 68 |
2.3%
|
|
| 2003 | 50 |
1.7%
|
|
| 2004 | 51 |
1.7%
|
|
| 2005 | 115 |
3.9%
|
|
| 2006 | 40 |
1.4%
|
|
| 2007 | 52 |
1.8%
|
|
| 2008 | 86 |
2.9%
|
|
| 2009 | 71 |
2.4%
|
|
| 2010 | 222 |
7.5%
|
|
| 2011 | 77 |
2.6%
|
|
| 2012 | 138 |
4.7%
|
|
| 2013 | 103 |
3.5%
|
|
| 2014 | 116 |
3.9%
|
|
| 2015 | 180 |
6.1%
|
|
| 2016 | 114 |
3.9%
|
|
| 2017 | 87 |
2.9%
|
|
| 2018 | 100 |
3.4%
|
|
| 2019 | 66 |
2.2%
|
|
| 2020 | 44 |
1.5%
|
|
| 2021 | 25 |
0.8%
|
|
| 2022 | 11 |
0.4%
|
|
| 2023 | 1 |
0%
|