Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 2 |
0.6%
|
-7 | Never regiestered (spontaneous) | 0 |
0%
|
1957 | 1 |
0.3%
|
|
1967 | 1 |
0.3%
|
|
1968 | 1 |
0.3%
|
|
1972 | 1 |
0.3%
|
|
1979 | 2 |
0.6%
|
|
1982 | 2 |
0.6%
|
|
1983 | 1 |
0.3%
|
|
1984 | 4 |
1.1%
|
|
1988 | 2 |
0.6%
|
|
1990 | 1 |
0.3%
|
|
1991 | 1 |
0.3%
|
|
1994 | 1 |
0.3%
|
|
1995 | 5 |
1.4%
|
|
1996 | 5 |
1.4%
|
|
1997 | 5 |
1.4%
|
|
1998 | 7 |
1.9%
|
|
1999 | 3 |
0.8%
|
|
2000 | 7 |
1.9%
|
|
2001 | 5 |
1.4%
|
|
2002 | 5 |
1.4%
|
|
2003 | 8 |
2.2%
|
|
2004 | 8 |
2.2%
|
|
2005 | 2 |
0.6%
|
|
2006 | 12 |
3.3%
|
|
2007 | 7 |
1.9%
|
|
2008 | 24 |
6.7%
|
|
2009 | 21 |
5.8%
|
|
2010 | 23 |
6.4%
|
|
2011 | 33 |
9.2%
|
|
2012 | 27 |
7.5%
|
|
2013 | 19 |
5.3%
|
|
2014 | 21 |
5.8%
|
|
2015 | 26 |
7.2%
|
|
2016 | 29 |
8.1%
|
|
2017 | 30 |
8.3%
|
|
2018 | 8 |
2.2%
|