| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 66 |
2.3%
|
|
| 2017 | 384 |
13.1%
|
|
| 2018 | 471 |
16.1%
|
|
| 2019 | 347 |
11.9%
|
|
| 9999 | NO RESPONSE | 6 |
0.2%
|
| Sysmiss | 1651 |
56.4%
|