| Value | Category | 
                                    
                    
                        | 0 | Sin ganancias | 
                                    
                    
                        | 1 | Mes | 
                                    
                    
                        | 2 | Bimestre | 
                                    
                    
                        | 3 | Trimestre | 
                                    
                    
                        | 4 | Cuatrimestre | 
                                    
                    
                        | 6 | Semestre | 
                                    
                    
                        | 8 | Año | 
                                    
                    
                        | 9 | Ignorado | 
                            
            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.