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Crude oil export revenue for the full year plunged 47.3 percent to $3.81 billion, the General Statistics Office said.
Oil product imports rose 18.7 percent to an estimated 10 million tonnes, with the value falling 29 percent to $5.34 billion, the office said in its monthly report.
Vietnam also imported an estimated 1.13 million tonnes of liquefied petroleum gas in 2015, up 21.2 percent from a year ago, it said.