| Value | Category | 
                                    
                    
                        | A | A | 
                                    
                    
                        | AFH | AFH | 
                                    
                    
                        | AH | AH | 
                                    
                    
                        | B | B | 
                                    
                    
                        | BF | BF | 
                                    
                    
                        | C | C | 
                                    
                    
                        | CG | CG | 
                                    
                    
                        | D | D | 
                                    
                    
                        | E | E | 
                                    
                    
                        | F | F | 
                                    
                    
                        | FG | FG | 
                                    
                    
                        | FHX | FHX | 
                                    
                    
                        | FI | FI | 
                                    
                    
                        | FX | FX | 
                                    
                    
                        | G | G | 
                                    
                    
                        | GH | GH | 
                                    
                    
                        | H | H | 
                                    
                    
                        | I | I | 
                                    
                    
                        | IX | IX | 
                                    
                    
                        | Z | Z | 
                            
            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.