| Value | Category | Cases | |
|---|---|---|---|
| 2004 | 74 |
3.2%
|
|
| 2005 | 111 |
4.8%
|
|
| 2006 | 99 |
4.3%
|
|
| 2007 | 134 |
5.9%
|
|
| 2008 | 214 |
9.3%
|
|
| 2009 | 209 |
9.1%
|
|
| 2010 | 238 |
10.4%
|
|
| 2011 | 281 |
12.3%
|
|
| 2012 | 250 |
10.9%
|
|
| 2013 | 225 |
9.8%
|
|
| 2014 | 196 |
8.6%
|
|
| 2015 | 231 |
10.1%
|
|
| 2016 | 27 |
1.2%
|
|
| Sysmiss | 275 |