| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 188 |
12%
|
|
| 2017 | 264 |
16.9%
|
|
| 2018 | 250 |
16%
|
|
| 2019 | 6 |
0.4%
|
|
| 9999 | NO RESPONSE | 3 |
0.2%
|
| Sysmiss | 853 |
54.5%
|