| Value | Category | Cases | |
|---|---|---|---|
| 1 | A great deal | 16 |
1.5%
|
| 2 | Quite a lot | 135 |
12.9%
|
| 3 | Not very much | 389 |
37.2%
|
| 4 | None at all | 431 |
41.2%
|
| Sysmiss | 75 |
7.2%
|