| Value | Category | Cases | |
|---|---|---|---|
| 2010 | 13 |
2.7%
|
|
| 2011 | 11 |
2.3%
|
|
| 2012 | 30 |
6.3%
|
|
| 2013 | 19 |
4%
|
|
| 2014 | 156 |
33%
|
|
| 2015 | 113 |
23.9%
|
|
| 2016 | 53 |
11.2%
|
|
| 2017 | 78 |
16.5%
|
|
| Sysmiss | 48 |