| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 17 |
25%
|
|
| 2018 | 30 |
44.1%
|
|
| 2019 | 20 |
29.4%
|
|
| 2020 | 1 |
1.5%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 14566 |