| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1936 | 
                                    
                                    86.9%
                                 | |
| Often (every week) | 27 | 
                                    
                                    1.2%
                                 | |
| Rarely (once or twice) | 124 | 
                                    
                                    5.6%
                                 | |
| Sometimes (in some weeks but not every week) | 142 | 
                                    
                                    6.4%
                                 |