Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 13 |
8.6%
|
1969 | 1 |
0.7%
|
|
1970 | 1 |
0.7%
|
|
1977 | 1 |
0.7%
|
|
1980 | 1 |
0.7%
|
|
1982 | 1 |
0.7%
|
|
1983 | 1 |
0.7%
|
|
1990 | 2 |
1.3%
|
|
1992 | 1 |
0.7%
|
|
1994 | 1 |
0.7%
|
|
1995 | 1 |
0.7%
|
|
1996 | 5 |
3.3%
|
|
1997 | 2 |
1.3%
|
|
1998 | 7 |
4.6%
|
|
1999 | 5 |
3.3%
|
|
2000 | 15 |
9.9%
|
|
2001 | 4 |
2.6%
|
|
2002 | 2 |
1.3%
|
|
2003 | 4 |
2.6%
|
|
2004 | 5 |
3.3%
|
|
2005 | 5 |
3.3%
|
|
2006 | 7 |
4.6%
|
|
2007 | 5 |
3.3%
|
|
2008 | 11 |
7.2%
|
|
2009 | 4 |
2.6%
|
|
2010 | 6 |
3.9%
|
|
2011 | 7 |
4.6%
|
|
2012 | 2 |
1.3%
|
|
2013 | 5 |
3.3%
|
|
2014 | 9 |
5.9%
|
|
2015 | 6 |
3.9%
|
|
2016 | 4 |
2.6%
|
|
2017 | 5 |
3.3%
|
|
2018 | 3 |
2%
|
|
Sysmiss | 210 |