| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Not at all free | 9 |
0.8%
|
| 2 | Not very free | 36 |
3%
|
| 3 | Somewhat free | 115 |
9.6%
|
| 4 | Completely free | 1029 |
85.8%
|
| 9 | Don't know | 11 |
0.9%
|
| 98 | Refused | 0 |
0%
|