Maldives became a founding member of the South Asian Association for Regional Cooperation (SAARC). It is also a member of the United Nations, the Commonwealth of Nations, the Organisation of Islamic Cooperation, and the Non-Aligned Movement. The World Bank classifies the Maldives as having an upper-middle income economy. Fishing has historically been the dominant economic activity, and remains the largest sector by far, followed by the rapidly growing tourism industry. Maldives rate "high" on the Human Development Index, with per-capita income significantly higher than other SAARC nations.