Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 14 |
16.3%
|
1980 | 1 |
1.2%
|
|
1984 | 1 |
1.2%
|
|
1986 | 1 |
1.2%
|
|
1990 | 4 |
4.7%
|
|
1991 | 1 |
1.2%
|
|
1994 | 4 |
4.7%
|
|
1995 | 5 |
5.8%
|
|
1996 | 3 |
3.5%
|
|
1997 | 2 |
2.3%
|
|
1998 | 1 |
1.2%
|
|
1999 | 1 |
1.2%
|
|
2000 | 3 |
3.5%
|
|
2001 | 2 |
2.3%
|
|
2002 | 5 |
5.8%
|
|
2003 | 3 |
3.5%
|
|
2004 | 2 |
2.3%
|
|
2005 | 5 |
5.8%
|
|
2006 | 1 |
1.2%
|
|
2008 | 3 |
3.5%
|
|
2009 | 5 |
5.8%
|
|
2010 | 6 |
7%
|
|
2011 | 2 |
2.3%
|
|
2012 | 4 |
4.7%
|
|
2013 | 1 |
1.2%
|
|
2014 | 1 |
1.2%
|
|
2015 | 2 |
2.3%
|
|
2016 | 1 |
1.2%
|
|
2017 | 1 |
1.2%
|
|
2018 | 1 |
1.2%
|
|
Sysmiss | 279 |