| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 94 |
5.7%
|
| 1 | A great deal | 160 |
9.8%
|
| 2 | Quite a lot | 467 |
28.5%
|
| 3 | Not very much | 639 |
39%
|
| 4 | None at all | 278 |
17%
|