The dollar index is up more than 7% so far this year, its best performance since 2015

The U.S. dollar moved toward its best annual performance in nearly a decade, as a stronger U.S. economy dampened expectations of a Federal Reserve interest-rate-cutting cycle and President-elect Donald Trump's threat of harsh tariffs bolstered long dollar bets. The Bloomberg Dollar Index is up more than 7 percent so far this year, its best performance since 2015. All developed countries' currencies weakened against the dollar as other central banks had to step in to support their economies.