Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 5 |
0.9%
|
1980 | 2 |
0.4%
|
|
1984 | 2 |
0.4%
|
|
1986 | 1 |
0.2%
|
|
1987 | 1 |
0.2%
|
|
1990 | 2 |
0.4%
|
|
1992 | 1 |
0.2%
|
|
1993 | 1 |
0.2%
|
|
1994 | 1 |
0.2%
|
|
1995 | 3 |
0.5%
|
|
1996 | 3 |
0.5%
|
|
1997 | 2 |
0.4%
|
|
1998 | 2 |
0.4%
|
|
1999 | 5 |
0.9%
|
|
2000 | 25 |
4.5%
|
|
2001 | 1 |
0.2%
|
|
2002 | 3 |
0.5%
|
|
2003 | 6 |
1.1%
|
|
2004 | 1 |
0.2%
|
|
2005 | 9 |
1.6%
|
|
2006 | 10 |
1.8%
|
|
2007 | 5 |
0.9%
|
|
2008 | 16 |
2.9%
|
|
2009 | 10 |
1.8%
|
|
2010 | 24 |
4.3%
|
|
2011 | 11 |
2%
|
|
2012 | 19 |
3.4%
|
|
2013 | 31 |
5.6%
|
|
2014 | 30 |
5.4%
|
|
2015 | 44 |
7.9%
|
|
2016 | 74 |
13.4%
|
|
2017 | 126 |
22.7%
|
|
2018 | 78 |
14.1%
|