| Value | Category | Cases | |
|---|---|---|---|
| 2014 | 11 |
1.8%
|
|
| 2015 | 156 |
25.8%
|
|
| 2016 | 394 |
65.1%
|
|
| 2017 | 44 |
7.3%
|
|
| Sysmiss | 3277 |