| Value | Category | Cases | |
|---|---|---|---|
| 2015 | 151 |
7.2%
|
|
| 2016 | 731 |
34.8%
|
|
| 2017 | 658 |
31.3%
|
|
| 2018 | 560 |
26.7%
|
|
| 9999 | NO RESPONSE | 0 |
0%
|
| Sysmiss | 1452 |