Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 4 |
5.9%
|
1968 | 1 |
1.5%
|
|
1970 | 1 |
1.5%
|
|
1974 | 1 |
1.5%
|
|
1977 | 1 |
1.5%
|
|
1978 | 1 |
1.5%
|
|
1979 | 1 |
1.5%
|
|
1981 | 1 |
1.5%
|
|
1984 | 1 |
1.5%
|
|
1989 | 1 |
1.5%
|
|
1990 | 2 |
2.9%
|
|
1991 | 3 |
4.4%
|
|
1992 | 3 |
4.4%
|
|
1993 | 1 |
1.5%
|
|
1995 | 4 |
5.9%
|
|
1996 | 1 |
1.5%
|
|
1997 | 1 |
1.5%
|
|
1999 | 1 |
1.5%
|
|
2000 | 1 |
1.5%
|
|
2001 | 2 |
2.9%
|
|
2002 | 3 |
4.4%
|
|
2004 | 2 |
2.9%
|
|
2005 | 2 |
2.9%
|
|
2006 | 6 |
8.8%
|
|
2007 | 1 |
1.5%
|
|
2009 | 1 |
1.5%
|
|
2010 | 1 |
1.5%
|
|
2011 | 1 |
1.5%
|
|
2012 | 2 |
2.9%
|
|
2014 | 2 |
2.9%
|
|
2015 | 1 |
1.5%
|
|
2016 | 4 |
5.9%
|
|
2019 | 2 |
2.9%
|
|
2020 | 1 |
1.5%
|
|
2021 | 2 |
2.9%
|
|
2022 | 4 |
5.9%
|
|
2023 | 1 |
1.5%
|
|
Sysmiss | 173 |