| Value | Category | Cases | |
|---|---|---|---|
| -2 | No answer | 15 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    
| -1 | Don't know | 11 | 
                                                                 
                                    
                                    1.1%
                                 
                                                             | 
                                                        
                    
| 1 | Have done | 218 | 
                                                                 
                                    
                                    21.8%
                                 
                                                             | 
                                                        
                    
| 2 | Might do | 445 | 
                                                                 
                                    
                                    44.5%
                                 
                                                             | 
                                                        
                    
| 3 | Would never do | 311 | 
                                                                 
                                    
                                    31.1%
                                 
                                                             |