Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 49 |
26.5%
|
1960 | 1 |
0.5%
|
|
1974 | 1 |
0.5%
|
|
1975 | 1 |
0.5%
|
|
1979 | 1 |
0.5%
|
|
1982 | 1 |
0.5%
|
|
1986 | 1 |
0.5%
|
|
1988 | 2 |
1.1%
|
|
1989 | 1 |
0.5%
|
|
1990 | 2 |
1.1%
|
|
1991 | 2 |
1.1%
|
|
1993 | 2 |
1.1%
|
|
1994 | 2 |
1.1%
|
|
1995 | 4 |
2.2%
|
|
1996 | 2 |
1.1%
|
|
1997 | 3 |
1.6%
|
|
1998 | 3 |
1.6%
|
|
1999 | 1 |
0.5%
|
|
2000 | 6 |
3.2%
|
|
2001 | 4 |
2.2%
|
|
2002 | 6 |
3.2%
|
|
2003 | 6 |
3.2%
|
|
2004 | 6 |
3.2%
|
|
2005 | 6 |
3.2%
|
|
2006 | 4 |
2.2%
|
|
2007 | 4 |
2.2%
|
|
2008 | 5 |
2.7%
|
|
2009 | 11 |
5.9%
|
|
2010 | 9 |
4.9%
|
|
2011 | 3 |
1.6%
|
|
2012 | 4 |
2.2%
|
|
2013 | 5 |
2.7%
|
|
2014 | 7 |
3.8%
|
|
2015 | 8 |
4.3%
|
|
2016 | 6 |
3.2%
|
|
2017 | 3 |
1.6%
|
|
2018 | 3 |
1.6%
|
|
Sysmiss | 416 |