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U.S. Sen. Ron Wyden (D-OR) speaks to members of the press January 6, 2014 on Capitol Hill in Washington, DC. (Alex Wong/Getty Images)

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The 164th meeting of the OPEC conference in Vienna, on December 4, 2013.(ALEXANDER KLEIN/AFP/Getty Images)

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U.S. President Barack Obama speaks at the Ronald Regan Building and International Trade Center, June 25, 2014 in Washington, DC. (Mark Wilson/Getty Images

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Pump jacks in an oil field over the Monterey Shale formation on March 24, 2014 near Lost Hills, California. (David McNew/Getty Images)

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Viagra drugs made by Pfizer and Nexiam made by the pharmaceutical firm AstraZeneca are displayed in a Pharmacy on May 15, 2014 in Johannesburg, South Africa. (Christopher Furlong/Getty Images)

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French economist Thomas Piketty speaks to students and guests during a presentation at King's College, central London, on April 30, 2014. (LEON NEAL/AFP/Getty Images)

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Intel CEO Paul Otellini (R) and Apple CEO Steve Jobs speak at the keynote address during the 2006 Macworld January 10, 2006 in San Francisco, California. (Justin Sullivan/Getty Images)