| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 140 |
8.5%
|
| 1 | A great deal | 144 |
8.8%
|
| 2 | Quite a lot | 478 |
29.2%
|
| 3 | Not very much | 636 |
38.8%
|
| 4 | None at all | 240 |
14.7%
|