| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 19 |
1.6%
|
| 1 | A great deal | 90 |
7.5%
|
| 2 | Quite a lot | 394 |
32.8%
|
| 3 | Not very much | 460 |
38.3%
|
| 4 | None at all | 237 |
19.8%
|