| Value | Category | 
                                    
                    
                        | _2.500 |  | 
                                    
                    
                        | _3.000 |  | 
                                    
                    
                        | _3.500 |  | 
                                    
                    
                        | _3.600 |  | 
                                    
                    
                        | _3.700 |  | 
                                    
                    
                        | _4.000 |  | 
                                    
                    
                        | _4.200 |  | 
                                    
                    
                        | _4.300 |  | 
                                    
                    
                        | _4.500 |  | 
                                    
                    
                        | _4.700 |  | 
                                    
                    
                        | _4.800 |  | 
                                    
                    
                        | _5.000 |  | 
                                    
                    
                        | _5.500 |  | 
                                    
                    
                        | _6.500 |  | 
                            
            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.