| Value | Category | Cases | |
|---|---|---|---|
| 1 | Form 1 or 1st year | 310 |
11.5%
|
| 2 | Form 2 or 2nd year | 624 |
23.1%
|
| 3 | Form 3 or 3rd year | 836 |
31%
|
| 4 | Form 4 or 4th year | 928 |
34.4%
|
| Sysmiss | 83 |