| Value | Category | Cases | |
|---|---|---|---|
| 2016 | 355 |
1.9%
|
|
| 2017 | 869 |
4.7%
|
|
| 2018 | 1060 |
5.8%
|
|
| 2019 | 59 |
0.3%
|
|
| 9999 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 15968 |
87.2%
|