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Last month, the U.S. exported more natural gas than it imported for the first time in almost 60 years. The country exported 7.4 billion cubic feet of liquefied gas a day in November, compared to the 7 billion cubic feet it imported daily, The Wall Street Journal reports.

American gas exports have jumped more than 50 percent since 2010, and the Department of Energy expects the U.S. to become the third-largest exporter of liquefied natural gas by 2020, behind Australia and Qatar. The two biggest U.S. customers are Canada and Mexico, who are partnered with the U.S. through the North American Free Trade Agreement. Plans to export to other partners, like South Korea and Singapore, are already in the works.