| Value | Category | Cases | |
|---|---|---|---|
| 2004 | 251 |
11.6%
|
|
| 2005 | 219 |
10.1%
|
|
| 2006 | 237 |
10.9%
|
|
| 2007 | 181 |
8.4%
|
|
| 2008 | 180 |
8.3%
|
|
| 2009 | 186 |
8.6%
|
|
| 2010 | 209 |
9.6%
|
|
| 2011 | 185 |
8.5%
|
|
| 2012 | 130 |
6%
|
|
| 2013 | 133 |
6.1%
|
|
| 2014 | 124 |
5.7%
|
|
| 2015 | 131 |
6%
|
|
| Sysmiss | 421 |