Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 1 |
0.3%
|
1975 | 1 |
0.3%
|
|
1986 | 1 |
0.3%
|
|
1989 | 1 |
0.3%
|
|
1990 | 1 |
0.3%
|
|
1991 | 2 |
0.6%
|
|
1992 | 2 |
0.6%
|
|
1993 | 5 |
1.6%
|
|
1994 | 3 |
0.9%
|
|
1995 | 3 |
0.9%
|
|
1996 | 2 |
0.6%
|
|
1997 | 6 |
1.9%
|
|
1998 | 2 |
0.6%
|
|
1999 | 3 |
0.9%
|
|
2000 | 11 |
3.4%
|
|
2001 | 3 |
0.9%
|
|
2002 | 11 |
3.4%
|
|
2003 | 6 |
1.9%
|
|
2004 | 2 |
0.6%
|
|
2005 | 10 |
3.1%
|
|
2006 | 6 |
1.9%
|
|
2007 | 13 |
4%
|
|
2008 | 19 |
5.9%
|
|
2009 | 5 |
1.6%
|
|
2010 | 21 |
6.5%
|
|
2011 | 7 |
2.2%
|
|
2012 | 16 |
5%
|
|
2013 | 23 |
7.1%
|
|
2014 | 25 |
7.8%
|
|
2015 | 31 |
9.6%
|
|
2016 | 28 |
8.7%
|
|
2017 | 27 |
8.4%
|
|
2018 | 18 |
5.6%
|
|
2019 | 5 |
1.6%
|
|
2020 | 2 |
0.6%
|
|
Sysmiss | 250 |