| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 2 |
0.2%
|
| -1 | Don't know | 30 |
2.5%
|
| 1 | A great deal | 42 |
3.5%
|
| 2 | Quite a lot | 233 |
19.4%
|
| 3 | Not very much | 512 |
42.7%
|
| 4 | None at all | 381 |
31.8%
|