| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 962 |
15%
|
|
| 2018 | 1147 |
17.9%
|
|
| 2019 | 1107 |
17.3%
|
|
| 2020 | 11 |
0.2%
|
|
| 9999 | NO RESPONSE | 21 |
0.3%
|
| Sysmiss | 3146 |
49.2%
|