| Value | Category | Cases | |
|---|---|---|---|
| 2015 | 11 |
5.6%
|
|
| 2016 | 57 |
28.8%
|
|
| 2017 | 30 |
15.2%
|
|
| 2018 | 50 |
25.3%
|
|
| 2019 | 50 |
25.3%
|
|
| Sysmiss | 0 |