| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 25 |
2.1%
|
| 1 | A great deal | 245 |
20.4%
|
| 2 | Quite a lot | 767 |
63.9%
|
| 3 | Not very much | 146 |
12.2%
|
| 4 | None at all | 17 |
1.4%
|