| Value | Category | Cases | |
|---|---|---|---|
| 2008 | 1 |
16.7%
|
|
| 2009 | 2 |
33.3%
|
|
| 2013 | 1 |
16.7%
|
|
| 2015 | 2 |
33.3%
|
|
| Sysmiss | 2581 |