Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 15 |
7.2%
|
1948 | 1 |
0.5%
|
|
1961 | 1 |
0.5%
|
|
1963 | 1 |
0.5%
|
|
1970 | 4 |
1.9%
|
|
1971 | 1 |
0.5%
|
|
1975 | 10 |
4.8%
|
|
1980 | 5 |
2.4%
|
|
1981 | 3 |
1.4%
|
|
1982 | 4 |
1.9%
|
|
1983 | 3 |
1.4%
|
|
1985 | 4 |
1.9%
|
|
1986 | 2 |
1%
|
|
1987 | 2 |
1%
|
|
1988 | 8 |
3.8%
|
|
1990 | 16 |
7.7%
|
|
1991 | 2 |
1%
|
|
1992 | 11 |
5.3%
|
|
1993 | 2 |
1%
|
|
1994 | 1 |
0.5%
|
|
1995 | 9 |
4.3%
|
|
1996 | 3 |
1.4%
|
|
1997 | 3 |
1.4%
|
|
1998 | 5 |
2.4%
|
|
2000 | 8 |
3.8%
|
|
2001 | 6 |
2.9%
|
|
2002 | 5 |
2.4%
|
|
2003 | 2 |
1%
|
|
2004 | 4 |
1.9%
|
|
2005 | 12 |
5.7%
|
|
2006 | 6 |
2.9%
|
|
2007 | 3 |
1.4%
|
|
2008 | 6 |
2.9%
|
|
2009 | 3 |
1.4%
|
|
2010 | 7 |
3.3%
|
|
2011 | 7 |
3.3%
|
|
2012 | 4 |
1.9%
|
|
2013 | 4 |
1.9%
|
|
2014 | 2 |
1%
|
|
2015 | 4 |
1.9%
|
|
2016 | 3 |
1.4%
|
|
2017 | 1 |
0.5%
|
|
2018 | 1 |
0.5%
|
|
2019 | 3 |
1.4%
|
|
2022 | 2 |
1%
|
|
Sysmiss | 1091 |