| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
1%
|
| -7 | Doesn't apply (spontaneous) | 24 |
6%
|
| 0 | Below required | 9 |
2.2%
|
| 1 | As required | 270 |
67.2%
|
| 2 | Above required | 95 |
23.6%
|