| Value | Category | Cases | |
|---|---|---|---|
| 2004 | 5 |
4.2%
|
|
| 2005 | 5 |
4.2%
|
|
| 2006 | 8 |
6.7%
|
|
| 2007 | 6 |
5%
|
|
| 2008 | 3 |
2.5%
|
|
| 2009 | 3 |
2.5%
|
|
| 2010 | 8 |
6.7%
|
|
| 2011 | 12 |
10%
|
|
| 2012 | 12 |
10%
|
|
| 2013 | 16 |
13.3%
|
|
| 2014 | 14 |
11.7%
|
|
| 2015 | 28 |
23.3%
|
|
| Sysmiss | 2467 |