| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 1 |
0.1%
|
| 1 | A great deal | 96 |
7.3%
|
| 2 | Quite a lot | 428 |
32.6%
|
| 3 | Not very much | 660 |
50.3%
|
| 4 | None at all | 128 |
9.7%
|