| Value | Category | Cases | |
|---|---|---|---|
| 2005 | 1 |
4.5%
|
|
| 2007 | 1 |
4.5%
|
|
| 2008 | 1 |
4.5%
|
|
| 2009 | 9 |
40.9%
|
|
| 2010 | 10 |
45.5%
|
|
| Sysmiss | 19 |