| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 240 |
8.6%
|
|
| 2011 | 361 |
13%
|
|
| 2012 | 429 |
15.4%
|
|
| 2013 | 616 |
22.1%
|
|
| 2014 | 719 |
25.8%
|
|
| 2015 | 417 |
15%
|
|
| Sysmiss | 2612 |