| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1648 | 
                                                                 
                                    
                                    15.4%
                                 
                                                             | 
                                                        
                    
| -8 | Refusal (spontaneous) | 553 | 
                                                                 
                                    
                                    5.2%
                                 
                                                             | 
                                                        
                    
| 1 | Yes | 1992 | 
                                                                 
                                    
                                    18.7%
                                 
                                                             | 
                                                        
                    
| 2 | No | 6479 | 
                                                                 
                                    
                                    60.7%
                                 
                                                             |