| Value | Category | Cases | |
|---|---|---|---|
| 0 | not at all | 2316 | 
                                                                 
                                    
                                    28.1%
                                 
                                                             | 
                                                        
                    
| 1 | less than once a week | 1867 | 
                                                                 
                                    
                                    22.7%
                                 
                                                             | 
                                                        
                    
| 2 | at least once a week | 4046 | 
                                                                 
                                    
                                    49.1%
                                 
                                                             | 
                                                        
                    
| 3 | almost every day | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 9 | 3 | 
                                                                 
                                    
                                    0%
                                 
                                                             |