The United Nations has posted its estimates of the migrant stock for most countries for 2015. Highlights include:
- 44 million people were outside their country of birth for a year or more
in 2015, up from 222 million in 2010 and 173 million in 2000
- About 3.3 percent of the world's 7.3 billion people are international
- The largest number of international migrants (47 million) are in the United States, or about a fifth (19 per cent) of the world’s total. Germany and the Russian Federation hosted the second and third largest numbers of migrants worldwide (12 million each), followed by Saudi Arabia (10 million).