| Value | Category | Cases | |
|---|---|---|---|
| 2003 | 2 |
8.7%
|
|
| 2004 | 1 |
4.3%
|
|
| 2005 | 2 |
8.7%
|
|
| 2008 | 1 |
4.3%
|
|
| 2009 | 3 |
13%
|
|
| 2010 | 5 |
21.7%
|
|
| 2011 | 3 |
13%
|
|
| 2012 | 2 |
8.7%
|
|
| 2013 | 4 |
17.4%
|
|
| Sysmiss | 10893 |