| Value | Category | Cases | |
|---|---|---|---|
| 2008 | 27 |
14.1%
|
|
| 2009 | 49 |
25.7%
|
|
| 2010 | 7 |
3.7%
|
|
| 2011 | 6 |
3.1%
|
|
| 2012 | 10 |
5.2%
|
|
| 2013 | 16 |
8.4%
|
|
| 2014 | 14 |
7.3%
|
|
| 2015 | 18 |
9.4%
|
|
| 2016 | 15 |
7.9%
|
|
| 2017 | 12 |
6.3%
|
|
| 2018 | 17 |
8.9%
|
|
| Sysmiss | 1149 |