By Debbie Howard
After years of being billed as “the world’s second-largest economy,” it appears that 2010 may be the year in which Japan’s economy is officially surpassed by China’s. Since gross domestic product comparisons are made in dollar terms, foreign exchange movements may impact the exact timing. But it will be soon. Japan’s GDP for 2009 stood at $5.1 trillion, only slightly higher than China’s $4.9 trillion, according to Cabinet Office and International Monetary Fund calculations.