One of the indicators that demonstrate a country's current level of development is the allocation to international education. According to an Organization for Economic Co-operation and Development's (OECD) study in 2011, 4.3 million students worldwide enroll outside of their country of citizenship every year. It is estimated that this number, which was 1.3 million in 1990s, will reach eight million by 2025. In terms of market capitalization, the revenues made from international students have already surpassed $170 billion.
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