| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 19 |
37.3%
|
|
| 2007 | 5 |
9.8%
|
|
| 2009 | 5 |
9.8%
|
|
| 2010 | 18 |
35.3%
|
|
| 2011 | 4 |
7.8%
|
|
| Sysmiss | 49135 |