| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 1 |
12.5%
|
|
| 2007 | 1 |
12.5%
|
|
| 2009 | 1 |
12.5%
|
|
| 2011 | 2 |
25%
|
|
| 2012 | 2 |
25%
|
|
| 2013 | 1 |
12.5%
|
|
| Sysmiss | 892 |