| Value | Category | Cases | |
|---|---|---|---|
| 0 | not at all | 3401 | 
                                                                 
                                    
                                    41.3%
                                 
                                                             | 
                                                        
                    
| 1 | less than once a week | 2344 | 
                                                                 
                                    
                                    28.5%
                                 
                                                             | 
                                                        
                    
| 2 | at least once a week | 2485 | 
                                                                 
                                    
                                    30.2%
                                 
                                                             | 
                                                        
                    
| 3 | almost every day | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 9 | 2 | 
                                                                 
                                    
                                    0%
                                 
                                                             |