| Value | Category | Cases | |
|---|---|---|---|
| 2012 | 37 |
1.5%
|
|
| 2013 | 300 |
12.4%
|
|
| 2014 | 392 |
16.2%
|
|
| 2015 | 374 |
15.5%
|
|
| 2016 | 419 |
17.3%
|
|
| 2017 | 898 |
37.1%
|
|
| Sysmiss | 2659 |