Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 6 |
15%
|
1990 | 1 |
2.5%
|
|
1993 | 1 |
2.5%
|
|
1995 | 1 |
2.5%
|
|
1998 | 2 |
5%
|
|
2000 | 2 |
5%
|
|
2002 | 1 |
2.5%
|
|
2003 | 1 |
2.5%
|
|
2005 | 2 |
5%
|
|
2007 | 1 |
2.5%
|
|
2008 | 1 |
2.5%
|
|
2009 | 4 |
10%
|
|
2012 | 2 |
5%
|
|
2013 | 2 |
5%
|
|
2014 | 1 |
2.5%
|
|
2015 | 2 |
5%
|
|
2017 | 4 |
10%
|
|
2018 | 1 |
2.5%
|
|
2019 | 2 |
5%
|
|
2020 | 3 |
7.5%
|
|
Sysmiss | 362 |