| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 28 |
1.3%
|
|
| 2017 | 79 |
3.6%
|
|
| 2018 | 185 |
8.5%
|
|
| 2019 | 2 |
0.1%
|
|
| 9999 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 1894 |
86.5%
|