| Value | Category | Cases | |
|---|---|---|---|
| 2013 | 3 |
0.5%
|
|
| 2014 | 163 |
29.2%
|
|
| 2015 | 240 |
42.9%
|
|
| 2016 | 153 |
27.4%
|
|
| Sysmiss | 5477 |