| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Not at all free | 22 |
1.8%
|
| 2 | Not very free | 61 |
5.1%
|
| 3 | Somewhat free | 172 |
14.3%
|
| 4 | Completely free | 943 |
78.6%
|
| 9 | Don't know | 2 |
0.2%
|
| 998 | Refused | 0 |
0%
|