Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 50 |
25.8%
|
1930 | 1 |
0.5%
|
|
1950 | 2 |
1%
|
|
1958 | 1 |
0.5%
|
|
1960 | 1 |
0.5%
|
|
1970 | 1 |
0.5%
|
|
1974 | 1 |
0.5%
|
|
1978 | 2 |
1%
|
|
1980 | 2 |
1%
|
|
1982 | 1 |
0.5%
|
|
1987 | 1 |
0.5%
|
|
1990 | 6 |
3.1%
|
|
1992 | 3 |
1.5%
|
|
1995 | 1 |
0.5%
|
|
1996 | 2 |
1%
|
|
1997 | 1 |
0.5%
|
|
1998 | 3 |
1.5%
|
|
1999 | 2 |
1%
|
|
2000 | 6 |
3.1%
|
|
2001 | 1 |
0.5%
|
|
2002 | 3 |
1.5%
|
|
2003 | 1 |
0.5%
|
|
2004 | 3 |
1.5%
|
|
2005 | 3 |
1.5%
|
|
2006 | 5 |
2.6%
|
|
2007 | 4 |
2.1%
|
|
2008 | 3 |
1.5%
|
|
2009 | 3 |
1.5%
|
|
2010 | 8 |
4.1%
|
|
2011 | 5 |
2.6%
|
|
2012 | 9 |
4.6%
|
|
2013 | 3 |
1.5%
|
|
2014 | 9 |
4.6%
|
|
2015 | 6 |
3.1%
|
|
2016 | 7 |
3.6%
|
|
2017 | 4 |
2.1%
|
|
2018 | 11 |
5.7%
|
|
2019 | 7 |
3.6%
|
|
2020 | 8 |
4.1%
|
|
2021 | 3 |
1.5%
|
|
2022 | 1 |
0.5%
|
|
Sysmiss | 404 |