| Value | Category | Cases | |
|---|---|---|---|
| 1 | Class 7 | 1039 |
26.9%
|
| 2 | Class 8 | 1020 |
26.4%
|
| 3 | Class 9 | 782 |
20.3%
|
| 4 | Class 10 | 688 |
17.8%
|
| 5 | Class 11 | 329 |
8.5%
|
| Sysmiss | 89 |