| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 792 |
12.4%
|
|
| 2018 | 1025 |
16%
|
|
| 2019 | 1077 |
16.8%
|
|
| 2020 | 8 |
0.1%
|
|
| 9999 | NO RESPONSE | 3 |
0%
|
| Sysmiss | 3489 |
54.6%
|