| Value | Category | Cases | |
|---|---|---|---|
| 1 | Class 6 | 747 |
32.6%
|
| 2 | Class 7 | 841 |
36.7%
|
| 3 | Form 1 | 393 |
17.1%
|
| 4 | Form 2 | 311 |
13.6%
|
| Sysmiss | 31 |