Brazil's population comprises many races and ethnic groups. The last PNAD (National Research for Sample of Domiciles) census revealed the following numbers: 93.096 million White people (49.7%), 79.782 million Pardo people (42.6%), 12.908 million Black people (6.9%), 919 thousand Asian people (0.5%) and 519 thousand Amerindian people (0.4%).[103] Most Brazilians can trace their ancestry to the country's indigenous peoples, Portuguese colonists and African slaves. Since 1500, with the arrival of the Portuguese, miscegenation between these three peoples took place. During over 3 centuries of Portuguese colonization, Brazil received 700 thousand Portuguese settlers and over 3 million African slaves.[104] Starting in the late 19th century, Brazil opened its doors to immigration: people of over 60 nationalities immigrated to Brazil. About 5 million European and Asian immigrants arrived from 1870 to 1953, most of them from Southern Europe (Italy, Portugal and Spain) and from Germany. In the early 20th century, people from Japan and the Middle-East also arrived.[105] The immigrants and their descendants had an important impact in the ethnic composition of the Brazilian population and many diasporas are present in the country. Brazil has the largest population of Italian origin outside of Italy, with over 25 million Italian Brazilians, the largest Japanese population outside of Japan, with 1.6 million Japanese Brazilians, as well the second largest German population outside of Germany, with 12 million German Brazilians.[106][107][108] A characteristic of Brazil is the race mixing. Genetically, most Brazilians have some degree of European, African and Amerindian ancestry[109]. All the population can be considered a single "Brazilian" ethnic group, with highly varied racial types and backgrounds, but without clear ethnic sub-divisions.