| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 609 |
9.5%
|
|
| 2018 | 1081 |
16.9%
|
|
| 2019 | 1106 |
17.3%
|
|
| 2020 | 9 |
0.1%
|
|
| 9999 | NO RESPONSE | 5 |
0.1%
|
| Sysmiss | 3584 |
56.1%
|