| Value | Category | Cases | |
|---|---|---|---|
| 2013 | 1 |
0%
|
|
| 2015 | 551 |
16.2%
|
|
| 2016 | 2346 |
69.1%
|
|
| 2017 | 499 |
14.7%
|
|
| Sysmiss | 9383 |