About the book
This report presents information on international migration levels and policies for major areas, regions and countries of the world. The data for the international migrant stock presented in this report are based on the database Trends in Total Migrant Stock: the 2005 Revision, which was issued by the Population Division in 2006. In order to maintain full consistency with the indicators contained in this database, the estimates on the total population, net migration and the projected population in 2050 in this report were derived from World Population Prospects: The 2004 Revision. For many of the countries, information on international migration is sufficient to provide a reasonable basis for levels, trends and policies. For some countries, however, the information is very limited or unavailable, and in such cases, imputations were made.