| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every day | 195 | 
                                                                 
                                    
                                    2%
                                 
                                                             | 
                                                        
                    
| 2 | More than twice a week | 406 | 
                                                                 
                                    
                                    4.1%
                                 
                                                             | 
                                                        
                    
| 3 | Once or twice a week | 544 | 
                                                                 
                                    
                                    5.5%
                                 
                                                             | 
                                                        
                    
| 4 | A few times a month | 843 | 
                                                                 
                                    
                                    8.6%
                                 
                                                             | 
                                                        
                    
| 5 | Rarely | 1686 | 
                                                                 
                                    
                                    17.1%
                                 
                                                             | 
                                                        
                    
| 6 | Never | 6183 | 
                                                                 
                                    
                                    62.7%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 3 |