| Value | Category | Cases | |
|---|---|---|---|
| 2007 | 1 |
6.3%
|
|
| 2008 | 1 |
6.3%
|
|
| 2010 | 1 |
6.3%
|
|
| 2011 | 4 |
25%
|
|
| 2012 | 7 |
43.8%
|
|
| 2013 | 2 |
12.5%
|
|
| Sysmiss | 14 |