| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Not at all free | 7 |
0.6%
|
| 2 | Not very free | 18 |
1.5%
|
| 3 | Somewhat free | 108 |
9%
|
| 4 | Completely free | 1061 |
88.4%
|
| 9 | Don't know | 6 |
0.5%
|
| 98 | Refused | 0 |
0%
|