| Value | Category | Cases | |
|---|---|---|---|
| 1 | Everyday | 1 | 
                                
                                0%
                             | 
| 2 | Once a week | 0 | 
                                
                                0%
                             | 
| 3 | Once a month | 39 | 
                                
                                0.3%
                             | 
| 4 | Once a term | 316 | 
                                
                                2.3%
                             | 
| 5 | Once a year | 493 | 
                                
                                3.5%
                             | 
| 6 | Unspecified | 91 | 
                                
                                0.6%
                             | 
| 95 | Missing | 5 | 
                                
                                0%
                             | 
| 98 | Don't know | 0 | 
                                
                                0%
                             | 
| 99 | NA | 13066 | 
                                
                                93.3%
                             |