| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 3 |
0.2%
|
|
| 2017 | 243 |
13.6%
|
|
| 2018 | 274 |
15.4%
|
|
| 2019 | 300 |
16.8%
|
|
| 2020 | 6 |
0.3%
|
|
| 9999 | NO RESPONSE | 1 |
0.1%
|
| Sysmiss | 954 |
53.6%
|