| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Doesn't apply (spontaneous) | 3 |
1.2%
|
| 0 | Below required | 7 |
2.8%
|
| 1 | As required | 186 |
74.4%
|
| 2 | Above required | 54 |
21.6%
|