The ROK exported $52.78 billion worth of oil products, in 2013, down 5.9 percent year-on-year, because of weak demand from China and SE Asian countries, according to its Energy Dep’t. Another cause for the drop was China's increased refining capacity. ROK’s oil product exports to the US increased 20.7 percent and those to Japan, 9.5 percent, over 2012, while exports to China fell 7.5 percent and those to SE Asia, 50.9 percent.