Although dwarfed by the movements of people within borders, international migration is also increasing. Roughly half of the over 125 million people living outside their countries of origin reside in developing countries. This figure includes the 1997 figure of 12.0 million refugees. International migration includes both permanent migration and so-called temporary or labor migration -- which may be for long periods, even decades -- as well as the movement of refugees and undocumented migrants.