| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.3%
|
| -7 | Doesn't apply (spontaneous) | 22 |
3.7%
|
| 0 | Below required | 64 |
10.6%
|
| 1 | As required | 435 |
72.4%
|
| 2 | Above required | 78 |
13%
|