Janet Yellen, chair of the U.S. Federal Reserve, left, speaks during a roundtable discussion with West Philadelphia Skills Initiative workforce development program participant in Philadelphia, Pennsylvania, U.S., on Monday, June 6, 2016. Yellen said today positive forces supporting U.S. job growth and higher inflation will still probably outweigh negative developments, calling additional gradual interest-rate increases appropriate without specifying their precise timing. Photographer: Andrew Harrer/Bloomberg via Getty Images
