Table 1.

Global estimates of migrant populations

Category of migrant	Population estimates
Regular immigrants	Annual flow of ~2.4 million (2005) with a stock of ~200 million127
International students	~2.1 Million (stock in 2003)128
Migrant workers	~86 Million (stock in 2005)129
Refugees	16 Million (stock in 2007) Source United Nations High Commission for Refugees125
Asylum seekers or refugee claimants	650,000 (stock in 2007)125
Temporary— recreational or business travel	900 Million per year (2007)126
Trafficked (across international borders)	Estimated 800,000 per year (2006)130
Internally displaced	51 Million (stock in 2007) includes those displaced by natural disasters and conflict125