| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 574 | 
                                    
                                    7.1%
                                 | 
| 1 | yes | 7420 | 
                                    
                                    91.5%
                                 | 
| 8 | don't know/not sure/depends | 117 | 
                                    
                                    1.4%
                                 | 
| 9 | 2 | 
                                    
                                    0%
                                 | |
| 11 | .Z | 126 |