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World's top 20 oil producers revealed

BAGHDAD, IRAQ - SEPTEMBER 21: Tigris River and skyline on September 21, 2006 in Baghdad, Iraq. The United Nations Assistance Mission in Iraq reportedly said the number of Iraqi civilian killed in July and August hit 6,599. (Photo by Wathiq Khuzaie/Getty Images).

World's 20 biggest oil producers

With crude production of crude oil on track for the biggest single-year gain in 60 years, the U.S. could be set to push past Saudi Arabia as the globe's top oil producer. Here we count down the world's top 20.