| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 27 |
1.2%
|
|
| 2017 | 79 |
3.6%
|
|
| 2018 | 187 |
8.5%
|
|
| 2019 | 3 |
0.1%
|
|
| 9999 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 1892 |
86.4%
|