| Value | Category | Cases | |
|---|---|---|---|
| 2004 | 14 |
2.8%
|
|
| 2005 | 15 |
3%
|
|
| 2006 | 15 |
3%
|
|
| 2007 | 12 |
2.4%
|
|
| 2008 | 26 |
5.2%
|
|
| 2009 | 24 |
4.8%
|
|
| 2010 | 32 |
6.4%
|
|
| 2011 | 47 |
9.5%
|
|
| 2012 | 57 |
11.5%
|
|
| 2013 | 65 |
13.1%
|
|
| 2014 | 83 |
16.7%
|
|
| 2015 | 107 |
21.5%
|
|
| Sysmiss | 2090 |