| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 9 |
0.8%
|
| 1 | A great deal | 16 |
1.3%
|
| 2 | Quite a lot | 188 |
15.7%
|
| 3 | Not very much | 399 |
33.3%
|
| 4 | None at all | 588 |
49%
|