| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 23 |
31.1%
|
| 1 | yes | 47 |
63.5%
|
| 8 | don't know | 2 |
2.7%
|
| 9 | 2 |
2.7%
|
|
| 11 | .Z | 18680 |