| Value | Category | Cases | |
|---|---|---|---|
| 2014 | 1 |
0.1%
|
|
| 2015 | 60 |
6%
|
|
| 2016 | 932 |
92.9%
|
|
| 2017 | 10 |
1%
|
|
| Sysmiss | 61 |