Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 0 |
0%
|
1950 | 1 |
2%
|
|
1960 | 1 |
2%
|
|
1970 | 1 |
2%
|
|
1980 | 1 |
2%
|
|
1987 | 1 |
2%
|
|
1989 | 2 |
3.9%
|
|
1990 | 1 |
2%
|
|
1992 | 1 |
2%
|
|
2000 | 1 |
2%
|
|
2002 | 1 |
2%
|
|
2003 | 4 |
7.8%
|
|
2004 | 1 |
2%
|
|
2005 | 4 |
7.8%
|
|
2006 | 3 |
5.9%
|
|
2007 | 2 |
3.9%
|
|
2008 | 2 |
3.9%
|
|
2009 | 2 |
3.9%
|
|
2010 | 2 |
3.9%
|
|
2011 | 1 |
2%
|
|
2012 | 3 |
5.9%
|
|
2014 | 2 |
3.9%
|
|
2015 | 1 |
2%
|
|
2016 | 3 |
5.9%
|
|
2017 | 2 |
3.9%
|
|
2018 | 2 |
3.9%
|
|
2020 | 2 |
3.9%
|
|
2021 | 1 |
2%
|
|
2022 | 3 |
5.9%
|
|
Sysmiss | 329 |