According to United Nations
data, there are 243 million international migrants scattered across the world, accounting for 3.4 percent of the global population. The United States hosts the most of the them as of 2015 - some 46.6 million people. Germany comes second with 12 million while Russia rounds off the top three with 11.6 million. In terms of sending countries, India is in first place with 15.6 million.
The United Kingdom, which is set to adopt stricter immigration controls
, is one of the top-10 countries worldwide for sending migrants. In 2015, approximately 4.9 million British citizens lived in other countries.