Source: United Nations Department of Economic and Social Affairs, Population Division, Trends in International Migrant Stock: The 2008 Revision, UN database, (New York: United Nations Department of Economic and Social Affairs, Population Division, 2009). Available at http://esa.un.org/migration/index.asp?panel=1

Notes: * Projected by the UN Population Division. As countries collect statistics on immigrants in varying ways, it is often difficult to harmonize them across countries; differences in counting deeply affect rank orders.

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