| Value | Category | Cases | |
|---|---|---|---|
| 1 | 400-700 | 13 |
3.9%
|
| 2 | 700-1800 | 28 |
8.4%
|
| 3 | 1800-2000 | 40 |
12%
|
| 4 | All of the above | 2 |
0.6%
|
| 5 | Don’t know | 249 |
75%
|