| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 2 |
0.1%
|
|
| 2017 | 274 |
9.4%
|
|
| 2018 | 424 |
14.5%
|
|
| 2019 | 320 |
10.9%
|
|
| 9999 | NO RESPONSE | 3 |
0.1%
|
| Sysmiss | 1902 |
65%
|