| Value | Category | Cases | |
|---|---|---|---|
| -1 | Don't know | 2 | 
                                                                 
                                    
                                    0.2%
                                 
                                                             | 
                                                        
                    
| 1 | A great deal | 53 | 
                                                                 
                                    
                                    4%
                                 
                                                             | 
                                                        
                    
| 2 | Quite a lot | 360 | 
                                                                 
                                    
                                    27.4%
                                 
                                                             | 
                                                        
                    
| 3 | Not very much | 659 | 
                                                                 
                                    
                                    50.2%
                                 
                                                             | 
                                                        
                    
| 4 | None at all | 239 | 
                                                                 
                                    
                                    18.2%
                                 
                                                             |