The International Monetary Fund (IMF) is a major financial agency of the United Nations, and an international financial institution funded by 190 member countries, with headquarters in Washington, D.C. It is regarded as the global lender of last resort to national governments, and a leading supporter of exchange-rate stability. Its stated mission is "working to foster global monetary cooperation, secure financial stability, facilitate international trade, promote high employment and sustainable economic growth, and reduce poverty around the world." Established in July 1944 at the Bretton Woods Conference, primarily according to the ideas of Harry Dexter White and John Maynard Keynes, it started with 29 member countries and the goal of reconstructing the international monetary system after World War II. It now plays a central role in the management of balance of payments difficulties and international financial crises. Through a quota system, countries contribute funds to a pool from which countries can borrow if they experience balance of payments problems. As of 2016, the fund had SDR 477 billion.