| Value | Category | 
                                    
                    
                        | 450 |  | 
                                    
                    
                        | 500 |  | 
                                    
                    
                        | 600 |  | 
                                    
                    
                        | 710 |  | 
                                    
                    
                        | 750 |  | 
                                    
                    
                        | 900 |  | 
                                    
                    
                        | 1200 |  | 
                                    
                    
                        | 1272 |  | 
                                    
                    
                        | 1356 |  | 
                                    
                    
                        | 1400 |  | 
                                    
                    
                        | 1442 |  | 
                                    
                    
                        | 1500 |  | 
                                    
                    
                        | 1600 |  | 
                                    
                    
                        | 1811 |  | 
                                    
                    
                        | 2000 |  | 
                                    
                    
                        | 2544 |  | 
                                    
                    
                        | 2600 |  | 
                                    
                    
                        | 99999 | Ignorado | 
                                    
                    
                        | Sysmiss |  | 
                            
            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.