| Value | Category | Cases | |
|---|---|---|---|
| 2014 | 2 |
6.1%
|
|
| 2015 | 3 |
9.1%
|
|
| 2016 | 7 |
21.2%
|
|
| 2017 | 11 |
33.3%
|
|
| 2018 | 10 |
30.3%
|
|
| Sysmiss | 32 |