| Value | Category | Cases | |
|---|---|---|---|
| 0 | not at all | 1708 | 
                                    
                                    20.7%
                                 | 
| 1 | less than once a week | 2637 | 
                                    
                                    32%
                                 | 
| 2 | at least once a week | 3893 | 
                                    
                                    47.3%
                                 | 
| 3 | almost every day | 0 | 
                                    
                                    0%
                                 | 
| 9 | 1 | 
                                    
                                    0%
                                 |