| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 |
1.8%
|
| -7 | Does not apply (spontaneous) | 70 |
12.6%
|
| 0 | Below required | 49 |
8.8%
|
| 1 | As required | 342 |
61.7%
|
| 2 | Above required | 83 |
15%
|