| Value | Category | Cases | |
|---|---|---|---|
| 2015 | 150 |
7.1%
|
|
| 2016 | 730 |
34.8%
|
|
| 2017 | 654 |
31.1%
|
|
| 2018 | 566 |
27%
|
|
| 9999 | NO RESPONSE | 0 |
0%
|
| Sysmiss | 1452 |