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7. Mexico

Crude production: 2.88 million barrels per day
Share of world production: 3.39%
Daily crude exports to the US: 1.22 million barrels
Proven reserves: 10.4 billion barrels

Pictured: Two workers walk aboard the Pemex (Petroleos Mexicanos) Ku-S oil processing center, part of the Ku-Maloob Zaap complex, in the Gulf of Mexico, off Ciudad del Carmen, Campeche state, Mexico.

Photo: Alfredo Estrella | AFP | Getty Images