| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
0.5%
|
| -7 | Doesn't apply (spontaneous) | 31 |
5.2%
|
| 0 | Below required | 98 |
16.3%
|
| 1 | As required | 387 |
64.4%
|
| 2 | Above required | 82 |
13.6%
|