| Value | Category | Cases | |
|---|---|---|---|
| 1 | Have done | 935 | 
                                                                 
                                    
                                    75.4%
                                 
                                                             | 
                                                        
                    
| 2 | Have not | 305 | 
                                                                 
                                    
                                    24.6%
                                 
                                                             | 
                                                        
                    
| -4 | Not asked | 0 | |
| -2 | NA | 0 | |
| -1 | DK | 14 |