| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 1615 | 
                                                                 
                                    
                                    8.3%
                                 
                                                             | 
                                                        
                    
| 2 | 1 | 74 | 
                                                                 
                                    
                                    0.4%
                                 
                                                             | 
                                                        
                    
| Missing value | 17827 | 
                                                                 
                                    
                                    91.3%
                                 
                                                             |