| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.1%
|
| -7 | Does not apply (spontaneous) | 8 |
0.5%
|
| 0 | Below required | 66 |
4.2%
|
| 1 | As required | 1229 |
78.1%
|
| 2 | Above required | 268 |
17%
|