| Value | Category | 
                                    
                    
                        | 1 |  | 
                                    
                    
                        | 22 |  | 
                                    
                    
                        | A |  | 
                                    
                    
                        | A B |  | 
                                    
                    
                        | AB |  | 
                                    
                    
                        | AC |  | 
                                    
                    
                        | ACB |  | 
                                    
                    
                        | ACD |  | 
                                    
                    
                        | ACDB |  | 
                                    
                    
                        | AD |  | 
                                    
                    
                        | ADC |  | 
                                    
                    
                        | ADX |  | 
                                    
                    
                        | AX |  | 
                                    
                    
                        | B |  | 
                                    
                    
                        | B B |  | 
                                    
                    
                        | BC |  | 
                                    
                    
                        | BCD |  | 
                                    
                    
                        | BD |  | 
                                    
                    
                        | C |  | 
                                    
                    
                        | C DD |  | 
                                    
                    
                        | C- |  | 
                                    
                    
                        | CB |  | 
                                    
                    
                        | CBD |  | 
                                    
                    
                        | CD |  | 
                                    
                    
                        | CDB |  | 
                                    
                    
                        | CDX |  | 
                                    
                    
                        | CX |  | 
                                    
                    
                        | D |  | 
                                    
                    
                        | DC |  | 
                                    
                    
                        | DD |  | 
                                    
                    
                        | DX |  | 
                                    
                    
                        | X |  | 
                                    
                    
                        | XCD |  | 
                                    
                    
                        | XDD |  | 
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.