| Value | Category | Cases | |
|---|---|---|---|
| 1 | Everyday | 1231 | 
                                
                                3.5%
                             | 
| 2 | Once a week | 55 | 
                                
                                0.2%
                             | 
| 3 | Once a month | 128 | 
                                
                                0.4%
                             | 
| 4 | Once a term | 2509 | 
                                
                                7.1%
                             | 
| 5 | Once a year | 125 | 
                                
                                0.4%
                             | 
| 6 | Unspecified | 114 | 
                                
                                0.3%
                             | 
| 95 | Missing | 4 | 
                                
                                0%
                             | 
| 98 | Don't know | 8 | 
                                
                                0%
                             | 
| 99 | NA | 31015 | 
                                
                                88.1%
                             |