| Value | Category | Cases | |
|---|---|---|---|
| 2008 | 1 |
7.7%
|
|
| 2010 | 3 |
23.1%
|
|
| 2011 | 1 |
7.7%
|
|
| 2012 | 3 |
23.1%
|
|
| 2013 | 3 |
23.1%
|
|
| 2014 | 2 |
15.4%
|
|
| Sysmiss | 187 |