| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 656 |
3.6%
|
|
| 2017 | 1196 |
6.5%
|
|
| 2018 | 1500 |
8.2%
|
|
| 2019 | 101 |
0.6%
|
|
| 9999 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 14858 |
81.1%
|