| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 49 |
4.1%
|
| 1 | A great deal | 158 |
13.1%
|
| 2 | Quite a lot | 221 |
18.4%
|
| 3 | Not very much | 455 |
37.8%
|
| 4 | None at all | 320 |
26.6%
|