| Value | Category | Cases | |
|---|---|---|---|
| -3 | illegal missing | 0 | 
                                    
                                    0%
                                 | 
| -2 | dont know | 0 | 
                                    
                                    0%
                                 | 
| -1 | refuse | 0 | 
                                    
                                    0%
                                 | 
| 1 | On a seasonal basis | 0 | 
                                    
                                    0%
                                 | 
| 2 | On a monthly basis | 6 | 
                                    
                                    30%
                                 | 
| 3 | Weekly basis | 1 | 
                                    
                                    5%
                                 | 
| 4 | Daily bases | 13 | 
                                    
                                    65%
                                 | 
| 5 | Hourly bases | 0 | 
                                    
                                    0%
                                 | 
| 6 | twice a month | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 1005 |