| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 1 |
0.1%
|
| 1 | Not at all free | 28 |
2.3%
|
| 2 | Not very free | 69 |
5.8%
|
| 3 | Somewhat free | 349 |
29.1%
|
| 4 | Completely free | 733 |
61.1%
|
| 9 | Don't know | 20 |
1.7%
|
| 998 | Refused | 0 |
0%
|