| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 320 |
1.7%
|
|
| 2017 | 773 |
4.2%
|
|
| 2018 | 924 |
5%
|
|
| 2019 | 57 |
0.3%
|
|
| 9999 | NO RESPONSE | 3 |
0%
|
| Sysmiss | 16235 |
88.7%
|