| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 9 |
0.5%
|
|
| 2017 | 257 |
13.1%
|
|
| 2018 | 266 |
13.5%
|
|
| 2019 | 179 |
9.1%
|
|
| 9999 | NO RESPONSE | 1 |
0.1%
|
| Sysmiss | 1255 |
63.8%
|