| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 879 |
88.7%
|
| 1 | yes | 108 |
10.9%
|
| 8 | don't know | 3 |
0.3%
|
| 9 | 1 |
0.1%
|
|
| 11 | .Z | 17763 |