| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 18 |
1.5%
|
| 1 | A great deal | 415 |
34.6%
|
| 2 | Quite a lot | 568 |
47.3%
|
| 3 | Not very much | 178 |
14.8%
|
| 4 | None at all | 21 |
1.8%
|