 Municipalities in which indigenous peoples are located can keep their normative traditional systems in relation to the election of their municipal authorities.This system is known as "Usos y Costumbres", roughly translated as "customs and traditions".According to official statistics —as reported by the National Commission for the Development of Indigenous Peoples or CDI— Amerindians make up 10-14% of the country's population, more than half of them (5.4% of total population) speak an indigenous language and a tenth (1.2% of total population) do not speak Spanish.