| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 18 |
6.7%
|
|
| 2011 | 94 |
35.2%
|
|
| 2012 | 79 |
29.6%
|
|
| 2013 | 48 |
18%
|
|
| 2014 | 17 |
6.4%
|
|
| 2015 | 11 |
4.1%
|
|
| Sysmiss | 12256 |