| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 4 |
0.3%
|
| 1 | A great deal | 237 |
19.8%
|
| 2 | Quite a lot | 849 |
70.8%
|
| 3 | Not very much | 92 |
7.7%
|
| 4 | None at all | 18 |
1.5%
|