| Value | Category | Cases | |
|---|---|---|---|
| 1 | Did not occur | 651 | 
                                    
                                    3.8%
                                 | 
| 2 | 1-2 times during the year | 4000 | 
                                    
                                    23.1%
                                 | 
| 3 | 3-4 times during the year | 6626 | 
                                    
                                    38.2%
                                 | 
| 4 | Once a month | 3910 | 
                                    
                                    22.6%
                                 | 
| 5 | Once a week | 1152 | 
                                    
                                    6.6%
                                 | 
| 6 | More than once a week | 987 | 
                                    
                                    5.7%
                                 | 
| 7 | N/A | 400 | |
| 8 | Invalid | 14 | |
| 9 | Missing | 399 |