| Value | Category | Cases | |
|---|---|---|---|
| 1 | Class 7 | 550 |
25.2%
|
| 2 | Class 8 | 661 |
30.2%
|
| 3 | Class 9 | 398 |
18.2%
|
| 4 | Class 10 | 553 |
25.3%
|
| 5 | Class 11 | 24 |
1.1%
|
| Sysmiss | 14 |