| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 553 |
15.6%
|
|
| 2018 | 1303 |
36.6%
|
|
| 2019 | 1437 |
40.4%
|
|
| 2020 | 263 |
7.4%
|
|
| 9997 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| Sysmiss | 4536 |