| Value | Category | Cases | |
|---|---|---|---|
| 1 | Class 7 | 1407 |
21.8%
|
| 2 | Class 8 | 1830 |
28.4%
|
| 3 | Class 9 | 1496 |
23.2%
|
| 4 | Class 10 | 1568 |
24.3%
|
| 5 | Class 11 | 139 |
2.2%
|
| Sysmiss | 89 |