south korea japan population 42.8 million 122.6 million gnp $ 118 billion $ 2,664 billion $ 2,800 per capita $ 21,820 per capita inflation rate 2.8 % 0.1 % trade surplus with u.s. $ 9.9 billion $ 59.8 billion exports $ 47.3 billion $ 229.2 billion imports $ 41.0 billion $ 149.5 billion sources : governments of u.s. , japan and south korea