Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 23 |
7.8%
|
1943 | 1 |
0.3%
|
|
1973 | 2 |
0.7%
|
|
1979 | 1 |
0.3%
|
|
1980 | 1 |
0.3%
|
|
1983 | 1 |
0.3%
|
|
1989 | 1 |
0.3%
|
|
1990 | 1 |
0.3%
|
|
1991 | 2 |
0.7%
|
|
1992 | 3 |
1%
|
|
1994 | 6 |
2%
|
|
1995 | 5 |
1.7%
|
|
1996 | 3 |
1%
|
|
1997 | 4 |
1.4%
|
|
1998 | 7 |
2.4%
|
|
1999 | 2 |
0.7%
|
|
2000 | 5 |
1.7%
|
|
2001 | 7 |
2.4%
|
|
2002 | 5 |
1.7%
|
|
2003 | 8 |
2.7%
|
|
2004 | 7 |
2.4%
|
|
2005 | 8 |
2.7%
|
|
2006 | 8 |
2.7%
|
|
2007 | 8 |
2.7%
|
|
2008 | 6 |
2%
|
|
2009 | 8 |
2.7%
|
|
2010 | 18 |
6.1%
|
|
2011 | 10 |
3.4%
|
|
2012 | 5 |
1.7%
|
|
2013 | 12 |
4.1%
|
|
2014 | 17 |
5.8%
|
|
2015 | 23 |
7.8%
|
|
2016 | 22 |
7.5%
|
|
2017 | 25 |
8.5%
|
|
2018 | 29 |
9.9%
|
|
Sysmiss | 1701 |