South Korea’s import prices rose for the fourth straight month in October, driven mainly by the won’s depreciation against the U.S. dollar.

According to preliminary data the Bank of Korea released Friday, the import price index increased one-point-nine percent to 138-point-17 between September and October.

The figure marks the most significant gain since January, when the index rose two-point-two percent.
 
The central bank said that despite a drop in global oil prices, the weaker local currency pushed up import costs, with the won falling two-point-three percent against the U.S. dollar in October from the previous month.
 
Dubai Crude, the nation’s key price benchmark, fell seven-point-two percent from the previous month over the same period.
 
Meanwhile, the export price index climbed four-point-one percent from September, marking the fourth straight monthly increase and the largest gain in 18 months.