The nation's current account surplus grew more than sixfold in 2015 from the previous year to ¥16.64 trillion, boosted by a plunge in crude oil imports and a travel surplus amid the yen's depreciation, government data showed Monday.

Goods trade registered a deficit of ¥643.4 billion, down 93.8 percent from the deficit of ¥10.40 trillion in 2014, thanks to plunges in oil prices that helped improve the trade balance despite slow growth in exports.

The current account surplus, one of the widest gauges of international trade, grew for the first time in five years, as imports dived 10.3 percent to ¥75.82 trillion, while exports rose 1.5 percent to ¥75.18 trillion, the Finance Ministry said in a preliminary report.