International students, or foreign students, according to the OECD are "those who received their prior education in another country and are not residents of their current country of study." In 2018, there were over 5.6 million international students, up from 1.6 million in 2000. By 2020, the U.S, U.K., Canada and Australia received approximately 50% of international students. The United States counted almost 1.1 million, the United Kingdom had more than 550,000, whilst there were 503,270 and 463,643 international students in Canada and Australia respectively.