Bank Of England Governor Mark Carney Speech To NY Economic Club [Getty Images]

David Koch, executive vice president of Koch Industries Inc., smiles as Mark Carney, governor of the Bank of England, not seen, speaks to the Economic Club of New York in New York, U.S., on Monday, Dec. 9, 2013. Carney said Britain's recovery will need to be sustained for a while before it is strong enough to withstand higher interest rates. Photographer: Jin Lee/Bloomberg via Getty Images

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