Calculadora Reajuste Aluguel

What does this calculator do?Adjusts the Annual Rent by the selected index;Readjusts the same Rent graphically by five different indexes; IGP-M, IGP-DI, IPCA, INPC and IVAR;Generates graph of the last 12 months of the indices; IGP-M, IGP-DI, IPCA INPC and IVAR;