| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 129 |
4.4%
|
|
| 2017 | 414 |
14.2%
|
|
| 2018 | 484 |
16.5%
|
|
| 2019 | 308 |
10.5%
|
|
| 9999 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 1589 |
54.3%
|