| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Not at all free | 21 |
0.9%
|
| 2 | Not very free | 59 |
2.5%
|
| 3 | Somewhat free | 243 |
10.1%
|
| 4 | Completely free | 2068 |
86.2%
|
| 9 | Don't know | 9 |
0.4%
|
| 998 | Refused | 0 |
0%
|