Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 22 |
3.1%
|
1973 | 1 |
0.1%
|
|
1975 | 1 |
0.1%
|
|
1977 | 1 |
0.1%
|
|
1979 | 1 |
0.1%
|
|
1980 | 1 |
0.1%
|
|
1983 | 1 |
0.1%
|
|
1986 | 1 |
0.1%
|
|
1987 | 1 |
0.1%
|
|
1988 | 1 |
0.1%
|
|
1989 | 4 |
0.6%
|
|
1990 | 7 |
1%
|
|
1992 | 2 |
0.3%
|
|
1993 | 2 |
0.3%
|
|
1994 | 1 |
0.1%
|
|
1995 | 5 |
0.7%
|
|
1996 | 4 |
0.6%
|
|
1997 | 2 |
0.3%
|
|
1998 | 11 |
1.5%
|
|
1999 | 7 |
1%
|
|
2000 | 22 |
3.1%
|
|
2001 | 6 |
0.8%
|
|
2002 | 8 |
1.1%
|
|
2003 | 8 |
1.1%
|
|
2004 | 11 |
1.5%
|
|
2005 | 19 |
2.7%
|
|
2006 | 7 |
1%
|
|
2007 | 10 |
1.4%
|
|
2008 | 16 |
2.2%
|
|
2009 | 24 |
3.4%
|
|
2010 | 49 |
6.9%
|
|
2011 | 13 |
1.8%
|
|
2012 | 27 |
3.8%
|
|
2013 | 22 |
3.1%
|
|
2014 | 29 |
4.1%
|
|
2015 | 58 |
8.1%
|
|
2016 | 25 |
3.5%
|
|
2017 | 48 |
6.7%
|
|
2018 | 47 |
6.6%
|
|
2019 | 56 |
7.8%
|
|
2020 | 61 |
8.5%
|
|
2021 | 25 |
3.5%
|
|
2022 | 29 |
4.1%
|
|
2023 | 18 |
2.5%
|
|
Sysmiss | 4638 |