| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1 | 
                                    
                                    100%
                                 | |
| 99 | Do not know | 0 | 
                                    
                                    0%
                                 | 
| 888 | LESS THAN 1 PER DAY BUT MORE THAN 0 | 0 | 
                                    
                                    0%
                                 | 
| Sysmiss | 6219 |