Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 4 |
16%
|
2017 | 5 |
20%
|
|
2018 | 6 |
24%
|
|
2019 | 6 |
24%
|
|
2020 | 4 |
16%
|
|
Sysmiss | 935 |