| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2015 | 272 |
3.4%
|
| 2 | 2014 | 893 |
11.3%
|
| 3 | 2013 | 1247 |
15.8%
|
| 4 | 2012 | 1106 |
14%
|
| 5 | 2011 | 499 |
6.3%
|
| 6 | 2010 | 617 |
7.8%
|
| 7 | 2009 | 386 |
4.9%
|
| 8 | 2008 | 554 |
7%
|
| 9 | 2007 or earlier | 2318 |
29.4%
|
| Sysmiss | 17692 |