| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 21 |
1.8%
|
| 1 | A great deal | 15 |
1.3%
|
| 2 | Quite a lot | 160 |
13.3%
|
| 3 | Not very much | 409 |
34.1%
|
| 4 | None at all | 595 |
49.6%
|