Venezuelan bolivar notes and various denominations of U.S dollar bills are arranged for a photograph in Caracas, Venezuela, on Sunday, Feb. 22, 2015. A decline in oil revenue has exacerbated the drop in the bolivar, which has lost 90 percent of its value against the U.S. dollar on the black market since President Nicolas Maduro came to office two years ago. Photographer: Meridith Kohut/Bloomberg
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