| Value | Category | Cases | |
|---|---|---|---|
| 2003 | 52 |
2.3%
|
|
| 2004 | 75 |
3.3%
|
|
| 2005 | 123 |
5.4%
|
|
| 2006 | 113 |
5%
|
|
| 2007 | 147 |
6.5%
|
|
| 2008 | 210 |
9.2%
|
|
| 2009 | 167 |
7.3%
|
|
| 2010 | 281 |
12.3%
|
|
| 2011 | 257 |
11.3%
|
|
| 2012 | 229 |
10.1%
|
|
| 2013 | 243 |
10.7%
|
|
| 2014 | 164 |
7.2%
|
|
| 2015 | 217 |
9.5%
|
|
| Sysmiss | 350 |