| Value | Category | Cases | |
|---|---|---|---|
| 2008 | 1 |
0.5%
|
|
| 2012 | 2 |
1.1%
|
|
| 2013 | 3 |
1.6%
|
|
| 2014 | 6 |
3.2%
|
|
| 2015 | 11 |
5.9%
|
|
| 2016 | 55 |
29.4%
|
|
| 2017 | 109 |
58.3%
|
|
| Sysmiss | 28081 |