| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 600 |
9.4%
|
|
| 2018 | 891 |
13.9%
|
|
| 2019 | 1092 |
17.1%
|
|
| 2020 | 9 |
0.1%
|
|
| 9999 | NO RESPONSE | 4 |
0.1%
|
| Sysmiss | 3798 |
59.4%
|