The U.S. economy , the world 's largest , was about $ 13.8 trillion in 2007 . China 's GDP will overtake India 's within a few years . World Bank 's estimate of China 's economic growth is about 10 percent . China announced $ 600 billion economic stimulus package recently .
China 's GDP will overtake India 's within a few years . World Bank 's estimate of China 's economic growth is about 10 percent . China announced $ 600 billion economic stimulus package recently .