| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 21 |
1.2%
|
| 1 | A great deal | 48 |
2.8%
|
| 2 | Quite a lot | 203 |
11.7%
|
| 3 | Not very much | 529 |
30.4%
|
| 4 | None at all | 940 |
54%
|