| Value | Category | Cases | |
|---|---|---|---|
| 2006 | 1 |
16.7%
|
|
| 2011 | 1 |
16.7%
|
|
| 2012 | 2 |
33.3%
|
|
| 2013 | 2 |
33.3%
|
|
| Sysmiss | 5769 |