ASEAN was established in 1967 by Indonesia, Malaysia, Philippines, Singapore and Thailand to accelerate economic growth and social progress through cooperation. It has since expanded to include 10 Southeast Asian countries and aims to create an economic community. ASEAN's GDP was $2.4 trillion in 2015 and its population counts for 9% of the world's total. The top six largest ASEAN economies (Indonesia, Thailand, Philippines, Singapore, Malaysia, Vietnam) contribute over 95% of the region's GDP.