| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 | 
                                                                 
                                    
                                    0%
                                 
                                                             | 
                                                        
                    
| 0 | No | 20 | 
                                                                 
                                    
                                    10%
                                 
                                                             | 
                                                        
                    
| 1 | Yes | 180 | 
                                                                 
                                    
                                    90%
                                 
                                                             |