| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 870 |
7.5%
|
| 1 | yes | 10052 |
87.1%
|
| 8 | dk, not sure, depends | 604 |
5.2%
|
| 9 | 10 |
0.1%
|
|
| 11 | .Z | 7218 |