| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 5 | 
                                                                 
                                    
                                    0.5%
                                 
                                                             | 
                                                        
                    
| -1 | Don't know | 9 | 
                                                                 
                                    
                                    0.9%
                                 
                                                             | 
                                                        
                    
| 1 | Have done | 204 | 
                                                                 
                                    
                                    20.4%
                                 
                                                             | 
                                                        
                    
| 2 | Might do | 272 | 
                                                                 
                                    
                                    27.2%
                                 
                                                             | 
                                                        
                    
| 3 | Would never do | 510 | 
                                                                 
                                    
                                    51%
                                 
                                                             |