| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 12 |
1%
|
| 1 | A great deal | 46 |
3.8%
|
| 2 | Quite a lot | 389 |
31.8%
|
| 3 | Not very much | 531 |
43.4%
|
| 4 | None at all | 245 |
20%
|