Chinese economy in 2010

From http://www.expansion.com/2010/12/29/opinion/tribunas/1293654334.html (in Spanish)

2010 has been a landmark year for China's international raising as a superpower. Its economy (5.7 billion US dollars) has overtaken Japan's and has become the second largest in the world, right after US'. Average growth of Chinese economy between 2000 and 2010 has been more than 10%. According to the purchase-power parities (PPPs) calculations, which take into account the differences of the cost of living in each country, China has also been in the second place since 2001, but experts forecast that by 2015 or 2016 it can also overtake US. Estimations also indicate that in 2007 89% of the Chinese population could be classified as "middle class", which gives an idea of the size of the transformation of this society in the few last decades.