| Value | Category | Cases | |
|---|---|---|---|
| 2004 | 6 |
4.1%
|
|
| 2005 | 3 |
2%
|
|
| 2006 | 6 |
4.1%
|
|
| 2007 | 8 |
5.4%
|
|
| 2008 | 7 |
4.7%
|
|
| 2009 | 8 |
5.4%
|
|
| 2010 | 14 |
9.5%
|
|
| 2011 | 14 |
9.5%
|
|
| 2012 | 16 |
10.8%
|
|
| 2013 | 11 |
7.4%
|
|
| 2014 | 19 |
12.8%
|
|
| 2015 | 36 |
24.3%
|
|
| Sysmiss | 2416 |