| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Doesn't apply (spontaneous) | 15 |
2.5%
|
| 0 | Below required | 27 |
4.5%
|
| 1 | As required | 462 |
76.9%
|
| 2 | Above required | 97 |
16.1%
|