| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very great extent | 3473 |
18.1%
|
| 2 | Great extent | 2840 |
14.8%
|
| 3 | Neither extent | 5640 |
29.4%
|
| 4 | A small extent | 4635 |
24.2%
|
| 5 | Very small extent | 2570 |
13.4%
|