| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 191 |
11.7%
|
| 1 | A great deal | 140 |
8.5%
|
| 2 | Quite a lot | 408 |
24.9%
|
| 3 | Not very much | 649 |
39.6%
|
| 4 | None at all | 250 |
15.3%
|