Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 0 |
0%
|
1990 | 1 |
0.8%
|
|
1994 | 1 |
0.8%
|
|
1995 | 2 |
1.7%
|
|
1997 | 3 |
2.5%
|
|
1998 | 5 |
4.2%
|
|
2000 | 5 |
4.2%
|
|
2002 | 1 |
0.8%
|
|
2003 | 2 |
1.7%
|
|
2004 | 4 |
3.3%
|
|
2005 | 3 |
2.5%
|
|
2006 | 2 |
1.7%
|
|
2007 | 2 |
1.7%
|
|
2008 | 5 |
4.2%
|
|
2009 | 3 |
2.5%
|
|
2010 | 8 |
6.7%
|
|
2011 | 3 |
2.5%
|
|
2012 | 9 |
7.5%
|
|
2013 | 7 |
5.8%
|
|
2014 | 8 |
6.7%
|
|
2015 | 5 |
4.2%
|
|
2016 | 12 |
10%
|
|
2017 | 14 |
11.7%
|
|
2018 | 10 |
8.3%
|
|
2019 | 5 |
4.2%
|