Over half of US crude oil produced by five states

Five states are responsible for over half of the crude oil production in the U.S., according to the Energy Department's stat shop.

Crude oil production surpassed imports for the first time in nearly 20 years late last year, the Energy Information Administration reported. In a brief released on Monday, the information administration said five states and the Gulf of Mexico brought the U.S. to record production levels, producing four out of five barrels of crude oil in the nation in 2013.

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Texas alone provides roughly 35 percent of the crude oil produced, with North Dakota coming in second at 12 percent.

California and Alaska produce nearly 7 percent each and Oklahoma make up 4 percent of oil production. Offshore developments in the Gulf of Mexico produce 17 percent.