| Value | Category | Cases | |
|---|---|---|---|
| 1 | 0 | 1919 | 
                                                                 
                                    
                                    9.8%
                                 
                                                             | 
                                                        
                    
| 2 | 1 | 3661 | 
                                                                 
                                    
                                    18.8%
                                 
                                                             | 
                                                        
                    
| Missing value | 13936 | 
                                                                 
                                    
                                    71.4%
                                 
                                                             |