Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 162 |
63.8%
|
1962 | 1 |
0.4%
|
|
1969 | 1 |
0.4%
|
|
1983 | 1 |
0.4%
|
|
1993 | 1 |
0.4%
|
|
1994 | 1 |
0.4%
|
|
1998 | 1 |
0.4%
|
|
2000 | 1 |
0.4%
|
|
2001 | 1 |
0.4%
|
|
2003 | 1 |
0.4%
|
|
2006 | 4 |
1.6%
|
|
2008 | 3 |
1.2%
|
|
2009 | 2 |
0.8%
|
|
2010 | 5 |
2%
|
|
2011 | 4 |
1.6%
|
|
2012 | 5 |
2%
|
|
2013 | 3 |
1.2%
|
|
2014 | 3 |
1.2%
|
|
2015 | 8 |
3.1%
|
|
2016 | 7 |
2.8%
|
|
2017 | 27 |
10.6%
|
|
2018 | 12 |
4.7%
|
|
Sysmiss | 842 |