| Value | Category | Cases | |
|---|---|---|---|
| 2003 | 32 |
3.8%
|
|
| 2004 | 20 |
2.4%
|
|
| 2005 | 36 |
4.3%
|
|
| 2006 | 37 |
4.4%
|
|
| 2007 | 31 |
3.7%
|
|
| 2008 | 43 |
5.1%
|
|
| 2009 | 40 |
4.8%
|
|
| 2010 | 51 |
6.1%
|
|
| 2011 | 60 |
7.1%
|
|
| 2012 | 75 |
8.9%
|
|
| 2013 | 110 |
13.1%
|
|
| 2014 | 118 |
14%
|
|
| 2015 | 187 |
22.3%
|
|
| Sysmiss | 1788 |