| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 38 |
2.2%
|
| 1 | A great deal | 72 |
4.1%
|
| 2 | Quite a lot | 273 |
15.7%
|
| 3 | Not very much | 530 |
30.4%
|
| 4 | None at all | 828 |
47.6%
|