| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Not at all free | 45 |
1.9%
|
| 2 | Not very free | 123 |
5.1%
|
| 3 | Somewhat free | 469 |
19.5%
|
| 4 | Completely free | 1744 |
72.7%
|
| 9 | Don't know | 19 |
0.8%
|
| 998 | Refused | 0 |
0%
|