SEOUL, Oct. 28 (Xinhua) -- South Korea's import volume kept rising for 13 straight months last month due to strong demand for raw materials, central bank data showed Thursday.
The import volume index came in at 121.07 in September, up 5.2 percent from a year earlier, according to the Bank of Korea (BOK). It has continued to gain since September last year.
In terms of volume, import of coal and oil products advanced 24.3 percent, with those for primary metal products going up 17.5 percent.
The import value index surged 33.8 percent over the year to 144.13 in September on higher price for crude oil and other raw materials.
The export value index advanced 18.4 percent to 134.71 in September, after soaring 35.1 percent in the prior month.
However, the export volume index declined 2.5 percent to 122.20 in September, marking the first fall in 13 months.
The export volume shrank last month on the back of the export surge in September last year.