| Value | Category | Cases | |
|---|---|---|---|
| 1 | Everyday | 63 | 
                                
                                0.2%
                             | 
| 2 | Once a week | 87 | 
                                
                                0.2%
                             | 
| 3 | Once a month | 9052 | 
                                
                                25.7%
                             | 
| 4 | Once a term | 5573 | 
                                
                                15.8%
                             | 
| 5 | Once a year | 1855 | 
                                
                                5.3%
                             | 
| 6 | Unspecified | 445 | 
                                
                                1.3%
                             | 
| 95 | Missing | 11 | 
                                
                                0%
                             | 
| 98 | Don't know | 28 | 
                                
                                0.1%
                             | 
| 99 | NA | 18075 | 
                                
                                51.4%
                             |