| Value | Category | Cases | |
|---|---|---|---|
| 1 | Class 6 | 540 |
28.2%
|
| 2 | Class 7 | 890 |
46.5%
|
| 3 | Form 1 | 184 |
9.6%
|
| 4 | Form 2 | 299 |
15.6%
|
| Sysmiss | 34 |