| Value | Category | Cases | |
|---|---|---|---|
| 2014 | 7 |
1.1%
|
|
| 2015 | 250 |
40.5%
|
|
| 2016 | 347 |
56.2%
|
|
| 2017 | 13 |
2.1%
|
|
| Sysmiss | 939 |