| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 39 |
3.3%
|
| 1 | A great deal | 151 |
12.6%
|
| 2 | Quite a lot | 853 |
71.1%
|
| 3 | Not very much | 140 |
11.7%
|
| 4 | None at all | 17 |
1.4%
|