| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 1056 |
93%
|
| 1 | yes | 67 |
5.9%
|
| 8 | don't know | 6 |
0.5%
|
| 9 | 6 |
0.5%
|
|
| 11 | .Z | 7097 |