Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 10 |
6%
|
1985 | 2 |
1.2%
|
|
1989 | 1 |
0.6%
|
|
1990 | 1 |
0.6%
|
|
1994 | 1 |
0.6%
|
|
1995 | 3 |
1.8%
|
|
1998 | 1 |
0.6%
|
|
2000 | 4 |
2.4%
|
|
2001 | 2 |
1.2%
|
|
2004 | 1 |
0.6%
|
|
2005 | 1 |
0.6%
|
|
2007 | 6 |
3.6%
|
|
2008 | 4 |
2.4%
|
|
2009 | 3 |
1.8%
|
|
2010 | 5 |
3%
|
|
2011 | 4 |
2.4%
|
|
2012 | 8 |
4.8%
|
|
2013 | 9 |
5.4%
|
|
2014 | 4 |
2.4%
|
|
2015 | 12 |
7.2%
|
|
2016 | 17 |
10.2%
|
|
2017 | 29 |
17.4%
|
|
2018 | 39 |
23.4%
|
|
Sysmiss | 73 |