| Value | Category | Cases | |
|---|---|---|---|
| 0 | not at all | 5774 | 
                                                                 
                                    
                                    70.1%
                                 
                                                             | 
                                                        
                    
| 1 | less than once a week | 1648 | 
                                                                 
                                    
                                    20%
                                 
                                                             | 
                                                        
                    
| 2 | at least once a week | 805 | 
                                                                 
                                    
                                    9.8%
                                 
                                                             | 
                                                        
                    
| 3 | almost every day | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 9 | 5 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             |