| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 30 |
2.5%
|
| 1 | A great deal | 107 |
8.9%
|
| 2 | Quite a lot | 355 |
29.6%
|
| 3 | Not very much | 473 |
39.4%
|
| 4 | None at all | 235 |
19.6%
|