共 2 条
[1]
工薪层缴税约占个税总额50%. 财政部. http://www.infzm.com/content/30296 . 2011
[2]
Historical Effective Federal Tax Rates:1979 to 2005. Congressional Budget Office. http://cbo.gov/ftpdocs/88xx/doc8885/EffectiveTaxRates.shtml . 2011