Pew Research Center. Origins and Destinations of the World’s Migrants, 1990-2017.

The figures in this interactive map refer to the total number of migrants living around the world as of 1990, 2000, 2010, or 2017. Since migrants have both an origin and a destination, international migrants can be viewed from two directions – as an emigrant (leaving an origin country) or as an immigrant (entering a destination country). According to the United Nations Population Division, an international migrant is someone who has been living for one year or longer in a country other than the one in which he or she was born.