| Value | Category | Cases | |
|---|---|---|---|
| 0 | No | 648 | 
                                    
                                    35.5%
                                 | 
| 1 | Yes | 1171 | 
                                    
                                    64.2%
                                 | 
| 99 | Don't know | 6 | 
                                    
                                    0.3%
                                 |