The Trends in International Migrant Stock: The 2013 Revision - Migrants by Destination and Origin provides a comparable and up-to-date set of estimates for all countries and areas of the world.
This provides estimates of the international migrant stock by destination and origin for the mid-point (1 July) of each year: 1990, 2000, 2010 and 2013. The estimates are based on official statistics on the foreign-born or the foreign population, classified by country of origin. Most of the statistics utilised to estimate the international migrant stock were obtained from population censuses. Additionally, population registers and nationally representative surveys provided information on the number and composition of international migrants.