| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 714 |
11.5%
|
|
| 2017 | 970 |
15.6%
|
|
| 2018 | 1069 |
17.2%
|
|
| 2019 | 140 |
2.2%
|
|
| 9999 | NO RESPONSE | 7 |
0.1%
|
| Sysmiss | 3323 |
53.4%
|