Korea has the highest level of dependence on exports and imports among the Group of 20 member countries.

According to a joint report by the International Monetary Fund and the OECD, Korea's export volume accounted for more than 43 percent of its GDP. This ranks highest among the G20 nations although Saudi Arabia's figure was not disclosed.

Korea's import dependence also ranked first on the list, mainly due to the country's lack of natural resources. The figure stood at nearly 40 percent, followed by Mexico and Germany both at about 28 percent.