| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 28 |
5.3%
|
|
| 2011 | 47 |
9%
|
|
| 2012 | 76 |
14.5%
|
|
| 2013 | 122 |
23.3%
|
|
| 2014 | 143 |
27.3%
|
|
| 2015 | 108 |
20.6%
|
|
| Sysmiss | 2540 |