| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 6409 | 
                                                                 
                                    
                                    34.2%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 12213 | 
                                                                 
                                    
                                    65.1%
                                 
                                                             | 
                                                        
                    
| 8 | don't know | 127 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    
| 9 | 5 | 
                                                                 
                                    
                                    0%
                                 
                                                             |