| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 19 |
1.6%
|
| 1 | A great deal | 115 |
9.6%
|
| 2 | Quite a lot | 837 |
69.8%
|
| 3 | Not very much | 191 |
15.9%
|
| 4 | None at all | 38 |
3.2%
|