| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 125 |
6.1%
|
|
| 2012 | 355 |
17.2%
|
|
| 2013 | 452 |
21.9%
|
|
| 2014 | 463 |
22.5%
|
|
| 2015 | 458 |
22.2%
|
|
| 2016 | 208 |
10.1%
|
|
| Sysmiss | 3975 |