| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 100 |
0.7%
|
| 1 | yes | 13611 |
98%
|
| 8 | don't know | 149 |
1.1%
|
| 9 | 29 |
0.2%
|
|
| 11 | .Z | 23622 |