| Value | Category | Cases | |
|---|---|---|---|
| 2009 | 4 |
3.7%
|
|
| 2010 | 43 |
40.2%
|
|
| 2011 | 32 |
29.9%
|
|
| 2012 | 18 |
16.8%
|
|
| 2013 | 7 |
6.5%
|
|
| 2014 | 3 |
2.8%
|
|
| Sysmiss | 2457 |