Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 51 |
12.1%
|
1959 | 1 |
0.2%
|
|
1970 | 1 |
0.2%
|
|
1980 | 1 |
0.2%
|
|
1988 | 1 |
0.2%
|
|
1990 | 2 |
0.5%
|
|
1991 | 2 |
0.5%
|
|
1992 | 3 |
0.7%
|
|
1993 | 2 |
0.5%
|
|
1994 | 5 |
1.2%
|
|
1995 | 8 |
1.9%
|
|
1996 | 5 |
1.2%
|
|
1997 | 2 |
0.5%
|
|
1998 | 8 |
1.9%
|
|
1999 | 10 |
2.4%
|
|
2000 | 25 |
5.9%
|
|
2001 | 15 |
3.6%
|
|
2002 | 10 |
2.4%
|
|
2003 | 17 |
4%
|
|
2004 | 12 |
2.8%
|
|
2005 | 21 |
5%
|
|
2006 | 21 |
5%
|
|
2007 | 17 |
4%
|
|
2008 | 20 |
4.7%
|
|
2009 | 16 |
3.8%
|
|
2010 | 25 |
5.9%
|
|
2011 | 20 |
4.7%
|
|
2012 | 27 |
6.4%
|
|
2013 | 11 |
2.6%
|
|
2014 | 14 |
3.3%
|
|
2015 | 24 |
5.7%
|
|
2016 | 9 |
2.1%
|
|
2017 | 8 |
1.9%
|
|
2018 | 8 |
1.9%
|
|
Sysmiss | 915 |