In 1973, Madagascar left the CFA franc zone and the Malagasy franc was declared inconvertible by the authorities of the Confederation Franc Africaine. Madagascar's coins and banknotes were then issued by Madagascar's Institut d'Émission Malgache until 1974 when the Banque Centrale de Madagascar was formed. And, since 2005, the Malagasy ariary (MGA), issued by the Banque Centrale de Madagascar, has been the country's currency.