| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 138 |
4.7%
|
|
| 2018 | 1110 |
38.2%
|
|
| 2019 | 1361 |
46.8%
|
|
| 2020 | 297 |
10.2%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 11728 |