| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 3916 |
88%
|
| 1 | yes | 516 |
11.6%
|
| 8 | don't know | 14 |
0.3%
|
| 9 | 5 |
0.1%
|
|
| 11 | .Z | 3781 |