| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 10 |
0.8%
|
| 1 | A great deal | 22 |
1.8%
|
| 2 | Quite a lot | 339 |
27.7%
|
| 3 | Not very much | 613 |
50.1%
|
| 4 | None at all | 239 |
19.5%
|