| Value | Category | Cases | |
|---|---|---|---|
| 2011 | 58 |
7.9%
|
|
| 2012 | 205 |
27.9%
|
|
| 2013 | 319 |
43.4%
|
|
| 2014 | 102 |
13.9%
|
|
| 2015 | 23 |
3.1%
|
|
| 2016 | 24 |
3.3%
|
|
| 2017 | 3 |
0.4%
|
|
| 2018 | 1 |
0.1%
|
|
| Sysmiss | 65 |