| Value | Category | Cases | |
|---|---|---|---|
| 2015 | 41 |
15.6%
|
|
| 2016 | 61 |
23.3%
|
|
| 2017 | 60 |
22.9%
|
|
| 2018 | 50 |
19.1%
|
|
| 2019 | 50 |
19.1%
|
|
| Sysmiss | 0 |