| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 17 |
4.2%
|
| -7 | Doesn't apply (spontaneous) | 77 |
19.2%
|
| 0 | Below required | 78 |
19.4%
|
| 1 | As required | 212 |
52.7%
|
| 2 | Above required | 18 |
4.5%
|