Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 11 |
6.4%
|
1991 | 2 |
1.2%
|
|
1992 | 6 |
3.5%
|
|
1993 | 2 |
1.2%
|
|
1994 | 5 |
2.9%
|
|
1995 | 9 |
5.3%
|
|
1996 | 4 |
2.3%
|
|
1997 | 7 |
4.1%
|
|
1998 | 3 |
1.8%
|
|
1999 | 6 |
3.5%
|
|
2000 | 10 |
5.8%
|
|
2001 | 5 |
2.9%
|
|
2002 | 5 |
2.9%
|
|
2003 | 5 |
2.9%
|
|
2004 | 5 |
2.9%
|
|
2005 | 13 |
7.6%
|
|
2006 | 8 |
4.7%
|
|
2007 | 4 |
2.3%
|
|
2008 | 12 |
7%
|
|
2009 | 11 |
6.4%
|
|
2010 | 6 |
3.5%
|
|
2011 | 6 |
3.5%
|
|
2012 | 2 |
1.2%
|
|
2013 | 4 |
2.3%
|
|
2014 | 6 |
3.5%
|
|
2015 | 3 |
1.8%
|
|
2016 | 3 |
1.8%
|
|
2017 | 6 |
3.5%
|
|
2018 | 2 |
1.2%
|
|
Sysmiss | 188 |