Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 0 |
0%
|
1988 | 1 |
5.9%
|
|
1998 | 1 |
5.9%
|
|
2000 | 2 |
11.8%
|
|
2003 | 1 |
5.9%
|
|
2008 | 1 |
5.9%
|
|
2009 | 2 |
11.8%
|
|
2010 | 1 |
5.9%
|
|
2011 | 1 |
5.9%
|
|
2012 | 1 |
5.9%
|
|
2015 | 1 |
5.9%
|
|
2017 | 2 |
11.8%
|
|
2018 | 2 |
11.8%
|
|
2020 | 1 |
5.9%
|
|
Sysmiss | 385 |