| Value | Category | Cases | |
|---|---|---|---|
| 2014 | 854 |
20%
|
|
| 2015 | 644 |
15.1%
|
|
| 2016 | 909 |
21.3%
|
|
| 2017 | 875 |
20.5%
|
|
| 2018 | 978 |
23%
|
|
| Sysmiss | 645 |