| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 67574 | 
                                    
                                    87.8%
                                 | 
| 1 | yes | 9346 | 
                                    
                                    12.2%
                                 | 
| 8 | don't know | 0 | 
                                    
                                    0%
                                 |