| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 2011 | 80 |
1.5%
|
| 2012 | 2012 | 581 |
10.7%
|
| 2013 | 2013 | 1229 |
22.7%
|
| 2014 | 2014 | 2440 |
45.1%
|
| 2015 | 2015 | 443 |
8.2%
|
| 2016 | 2016 | 634 |
11.7%
|
| Sysmiss | 18630 |