The United States is one of the 12 founding members of APEC. It is the largest economy in the world and home to 323 million people. When the forum began in 1989, the real GDP of the United States was USD 8.8 trillion, which went up to 16.9 trillion in 2016. Its real per capita GDP also rose from 36,000 in 1989 to 52,000 in 2016.