| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 502 |
2.7%
|
|
| 2017 | 1032 |
5.6%
|
|
| 2018 | 1288 |
7%
|
|
| 2019 | 96 |
0.5%
|
|
| 9999 | NO RESPONSE | 2 |
0%
|
| Sysmiss | 15392 |
84.1%
|