Migration and Remittances Factbook 2008 / World Bank, 2008
http://econ.worldbank.org/WBSITE/EXTERNAL/EXTDEC/EXTDECPROSPECTS/0,,contentMDK:21352016~isCURL:Y~menuPK:3145470~pagePK:64165401~piPK:64165026~theSitePK:476883,00.html
"This factbook provides a snapshot of migration and remittances for all countries, regions and income groups of the world, compiled from available data from various sources."