FILE PHOTO: U.S. outgoing Federal Reserve Chair Janet Yellen holds a news conference after a two-day Federal Open Market Committee (FOMC) meeting in Washington, U.S. December 13, 2017. REUTERS/Jonathan Ernst
FILE PHOTO: U.S. outgoing Federal Reserve Chair Janet Yellen holds a news conference after a two-day Federal Open Market Committee (FOMC) meeting in Washington, U.S. December 13, 2017. REUTERS/Jonathan Ernst