| Value | Category | Cases | |
|---|---|---|---|
| 2017 | 17 |
1%
|
|
| 2018 | 186 |
10.4%
|
|
| 2019 | 226 |
12.7%
|
|
| 2020 | 14 |
0.8%
|
|
| 9999 | NO RESPONSE | 1 |
0.1%
|
| Sysmiss | 1337 |
75.1%
|