| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Not at all free | 3 |
0.3%
|
| 2 | Not very free | 15 |
1.3%
|
| 3 | Somewhat free | 127 |
10.6%
|
| 4 | Completely free | 1050 |
87.5%
|
| 9 | Don't know | 5 |
0.4%
|
| 998 | Refused | 0 |
0%
|