| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 0 | Less than once a year | 1278 | 
                                                                 
                                    
                                    94.7%
                                 
                                                             | 
                                                        
                    
| 1 | At least once a year | 27 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    
| 2 | At least every 6 months | 20 | 
                                                                 
                                    
                                    1.5%
                                 
                                                             | 
                                                        
                    
| 3 | At least every 3 months | 4 | 
                                                                 
                                    
                                    0.3%
                                 
                                                             | 
                                                        
                    
| 4 | At least once a month | 11 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    
| 9 | Don't know | 10 | 
                                                                 
                                    
                                    0.7%
                                 
                                                             | 
                                                        
                    
| 998 | Refused | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             |