Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 1 |
0.2%
|
-7 | Never regiestered (spontaneous) | 0 |
0%
|
1887 | 1 |
0.2%
|
|
1928 | 1 |
0.2%
|
|
1956 | 1 |
0.2%
|
|
1958 | 1 |
0.2%
|
|
1965 | 1 |
0.2%
|
|
1969 | 1 |
0.2%
|
|
1970 | 1 |
0.2%
|
|
1987 | 1 |
0.2%
|
|
1988 | 1 |
0.2%
|
|
1989 | 3 |
0.5%
|
|
1990 | 2 |
0.3%
|
|
1991 | 1 |
0.2%
|
|
1992 | 4 |
0.7%
|
|
1993 | 4 |
0.7%
|
|
1994 | 7 |
1.2%
|
|
1995 | 11 |
1.9%
|
|
1996 | 20 |
3.4%
|
|
1997 | 15 |
2.6%
|
|
1998 | 12 |
2.1%
|
|
1999 | 9 |
1.5%
|
|
2000 | 12 |
2.1%
|
|
2001 | 12 |
2.1%
|
|
2002 | 10 |
1.7%
|
|
2003 | 10 |
1.7%
|
|
2004 | 18 |
3.1%
|
|
2005 | 22 |
3.8%
|
|
2006 | 24 |
4.1%
|
|
2007 | 28 |
4.8%
|
|
2008 | 34 |
5.9%
|
|
2009 | 27 |
4.6%
|
|
2010 | 27 |
4.6%
|
|
2011 | 33 |
5.7%
|
|
2012 | 41 |
7.1%
|
|
2013 | 31 |
5.3%
|
|
2014 | 27 |
4.6%
|
|
2015 | 37 |
6.4%
|
|
2016 | 41 |
7.1%
|
|
2017 | 33 |
5.7%
|
|
2018 | 16 |
2.8%
|