| Value | Category | Cases | |
|---|---|---|---|
| 5 | 1 | 
                                    
                                    7.7%
                                 | |
| 10 | 3 | 
                                    
                                    23.1%
                                 | |
| 15 | 3 | 
                                    
                                    23.1%
                                 | |
| 20 | 5 | 
                                    
                                    38.5%
                                 | |
| 77 | Refuse to answer | 0 | 
                                    
                                    0%
                                 | 
| 99 | Do not know | 1 | 
                                    
                                    7.7%
                                 | 
| 888 | LESS THAN 1 PER WEEK BUT MORE THAN 0 | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 6207 |