| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 1774 | 
                                                                 
                                    
                                    9.1%
                                 
                                                             | 
                                                        
                    
| 2 | 1 | 15 | 
                                                                 
                                    
                                    0.1%
                                 
                                                             | 
                                                        
                    
| Missing value | 17727 | 
                                                                 
                                    
                                    90.8%
                                 
                                                             |