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A World Economic Forum logo sits on a window panel in the Kongress Zentrum, also known as Congress Center, on the opening day of the World Economic Forum (WEF) in Davos, Switzerland, on Wednesday, Jan. 21, 2015. World leaders, influential executives, bankers and policy makers attend the 45th annual meeting of the World Economic Forum in Davos from Jan. 21-24. Photographer: Chris Ratcliffe/Bloomberg via Getty Images

A World Economic Forum logo sits on a window panel in the Kongress Zentrum, also known as Congress Center, on the opening day of the World Economic Forum (WEF) in Davos, Switzerland, on Wednesday, Jan. 21, 2015. World leaders, influential executives, bankers and policy makers attend the 45th annual meeting of the World Economic Forum in Davos from Jan. 21-24. Photographer: Chris Ratcliffe/Bloomberg via Getty Images