中国中下阶层税负过重 (Research Shows Taxes Paid by Wealthiest 9% in China Total 0.04% of GDP; in US, Taxes Paid by Wealthiest 5% Make up 5% of GDP) Radio Free Asia, March 11, 2013 http://www.rfa.org/mandarin/yataibaodao/jingmao/xql-03112013161726.html