| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 60 |
3.2%
|
|
| 2012 | 83 |
4.4%
|
|
| 2013 | 187 |
10%
|
|
| 2014 | 574 |
30.7%
|
|
| 2015 | 629 |
33.6%
|
|
| 2016 | 338 |
18.1%
|
|
| Sysmiss | 4165 |