| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 379 |
5.9%
|
|
| 2018 | 1014 |
15.9%
|
|
| 2019 | 1120 |
17.5%
|
|
| 2020 | 7 |
0.1%
|
|
| 9999 | NO RESPONSE | 7 |
0.1%
|
| Sysmiss | 3867 |
60.5%
|