| Value | Category | Cases | |
|---|---|---|---|
| 2007 | 1 |
7.7%
|
|
| 2008 | 9 |
69.2%
|
|
| 2009 | 2 |
15.4%
|
|
| 2010 | 1 |
7.7%
|
|
| Sysmiss | 10837 |