| Value | Category | Cases | |
|---|---|---|---|
| 1 | Greater extent | 1238 |
6.5%
|
| 2 | Great extent | 5937 |
31.3%
|
| 3 | Lesser extent | 5864 |
30.9%
|
| 4 | Not at all | 1794 |
9.5%
|
| 5 | Don't know | 4145 |
21.8%
|