| Value | Category | Cases | |
|---|---|---|---|
| 2012 | 1 |
0.1%
|
|
| 2013 | 27 |
4%
|
|
| 2014 | 61 |
9%
|
|
| 2015 | 144 |
21.2%
|
|
| 2016 | 286 |
42.2%
|
|
| 2017 | 159 |
23.5%
|
|
| Sysmiss | 2062 |