| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 6 |
0.5%
|
| -1 | Don't know | 16 |
1.3%
|
| 1 | A great deal | 20 |
1.7%
|
| 2 | Quite a lot | 170 |
14.2%
|
| 3 | Not very much | 530 |
44.2%
|
| 4 | None at all | 458 |
38.2%
|