| Value | Category | Cases | |
|---|---|---|---|
| 1 | Did not occur | 2916 | 
                                    
                                    16.8%
                                 | 
| 2 | 1-2 times during the year | 3621 | 
                                    
                                    20.9%
                                 | 
| 3 | 3-4 times during the year | 4086 | 
                                    
                                    23.6%
                                 | 
| 4 | Once a month | 3761 | 
                                    
                                    21.7%
                                 | 
| 5 | Once a week | 1779 | 
                                    
                                    10.3%
                                 | 
| 6 | More than once a week | 1148 | 
                                    
                                    6.6%
                                 | 
| 7 | N/A | 400 | |
| 8 | Invalid | 9 | |
| 9 | Missing | 419 |