| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Not at all free | 11 |
0.9%
|
| 2 | Not very free | 42 |
3.5%
|
| 3 | Somewhat free | 205 |
17.1%
|
| 4 | Completely free | 941 |
78.4%
|
| 9 | Don't know | 1 |
0.1%
|
| 98 | Refused | 0 |
0%
|