| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 789 |
12.3%
|
|
| 2018 | 1139 |
17.8%
|
|
| 2019 | 1096 |
17.1%
|
|
| 2020 | 8 |
0.1%
|
|
| 9999 | NO RESPONSE | 3 |
0%
|
| Sysmiss | 3359 |
52.5%
|