Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 4 |
3.4%
|
2007 | 1 |
0.9%
|
|
2009 | 1 |
0.9%
|
|
2012 | 2 |
1.7%
|
|
2014 | 5 |
4.3%
|
|
2015 | 3 |
2.6%
|
|
2016 | 7 |
6%
|
|
2017 | 28 |
23.9%
|
|
2018 | 36 |
30.8%
|
|
2019 | 30 |
25.6%
|
|
Sysmiss | 243 |