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A Degussa stamp sits on a gold ingot on display inside the Deutsche Bundesbank's money museum in Frankfurt, Germany, on Thursday, Dec. 29, 2016. German business sentiment rose to the highest level in almost three years in December, signaling growth in Europe's largest economy picked up speed toward the end of the year. Photographer: Alex Kraus/Bloomberg via Getty Images

A Degussa stamp sits on a gold ingot on display inside the Deutsche Bundesbank's money museum in Frankfurt, Germany, on Thursday, Dec. 29, 2016. German business sentiment rose to the highest level in almost three years in December, signaling growth in Europe's largest economy picked up speed toward the end of the year. Photographer: Alex Kraus/Bloomberg via Getty Images