Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 0 |
0%
|
1963 | 1 |
1.7%
|
|
1970 | 1 |
1.7%
|
|
1972 | 1 |
1.7%
|
|
1983 | 1 |
1.7%
|
|
1987 | 1 |
1.7%
|
|
1990 | 2 |
3.4%
|
|
1991 | 1 |
1.7%
|
|
1992 | 2 |
3.4%
|
|
1993 | 1 |
1.7%
|
|
1995 | 3 |
5.1%
|
|
1996 | 1 |
1.7%
|
|
1998 | 2 |
3.4%
|
|
2000 | 1 |
1.7%
|
|
2001 | 1 |
1.7%
|
|
2002 | 2 |
3.4%
|
|
2003 | 6 |
10.2%
|
|
2004 | 1 |
1.7%
|
|
2005 | 2 |
3.4%
|
|
2006 | 2 |
3.4%
|
|
2009 | 2 |
3.4%
|
|
2010 | 3 |
5.1%
|
|
2011 | 1 |
1.7%
|
|
2012 | 4 |
6.8%
|
|
2013 | 2 |
3.4%
|
|
2014 | 2 |
3.4%
|
|
2015 | 6 |
10.2%
|
|
2016 | 1 |
1.7%
|
|
2017 | 2 |
3.4%
|
|
2018 | 3 |
5.1%
|
|
2019 | 1 |
1.7%
|
|
Sysmiss | 89 |