| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 4 |
1.1%
|
|
| 2010 | 89 |
23.5%
|
|
| 2011 | 107 |
28.2%
|
|
| 2012 | 108 |
28.5%
|
|
| 2013 | 64 |
16.9%
|
|
| 2014 | 7 |
1.8%
|
|
| Sysmiss | 2185 |