| Value | Category | Cases | |
|---|---|---|---|
| -555 | 598 |
46.4%
|
|
| 0 | 231 |
17.9%
|
|
| 2014 | 16 |
1.2%
|
|
| 2015 | 95 |
7.4%
|
|
| 2016 | 267 |
20.7%
|
|
| 2017 | 83 |
6.4%
|
|
| Sysmiss | 8 |