Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 151 |
40.4%
|
1956 | 1 |
0.3%
|
|
1957 | 1 |
0.3%
|
|
1967 | 1 |
0.3%
|
|
1970 | 1 |
0.3%
|
|
1971 | 2 |
0.5%
|
|
1976 | 1 |
0.3%
|
|
1980 | 3 |
0.8%
|
|
1982 | 1 |
0.3%
|
|
1985 | 3 |
0.8%
|
|
1987 | 1 |
0.3%
|
|
1988 | 1 |
0.3%
|
|
1990 | 3 |
0.8%
|
|
1991 | 3 |
0.8%
|
|
1992 | 1 |
0.3%
|
|
1995 | 4 |
1.1%
|
|
1996 | 2 |
0.5%
|
|
1998 | 2 |
0.5%
|
|
1999 | 3 |
0.8%
|
|
2000 | 6 |
1.6%
|
|
2001 | 1 |
0.3%
|
|
2002 | 4 |
1.1%
|
|
2003 | 1 |
0.3%
|
|
2004 | 7 |
1.9%
|
|
2005 | 11 |
2.9%
|
|
2006 | 1 |
0.3%
|
|
2007 | 2 |
0.5%
|
|
2008 | 9 |
2.4%
|
|
2009 | 6 |
1.6%
|
|
2010 | 10 |
2.7%
|
|
2011 | 12 |
3.2%
|
|
2012 | 5 |
1.3%
|
|
2013 | 5 |
1.3%
|
|
2014 | 8 |
2.1%
|
|
2015 | 25 |
6.7%
|
|
2016 | 11 |
2.9%
|
|
2017 | 10 |
2.7%
|
|
2018 | 26 |
7%
|
|
2019 | 17 |
4.5%
|
|
2020 | 8 |
2.1%
|
|
2021 | 4 |
1.1%
|
|
Sysmiss | 1199 |