Migration Figure by Regions (image) University of Washington Share Print E-Mail Caption Estimated global migration flows by region from 2010 to 2015. Numbers indicate millions of people. Credit Azose and Raftery, PNAS, 2018 Usage Restrictions Must include credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.