?????50??? ????????????

???

50.??500???2000???????3%????

??49.??????(Tyler Cowen)???30??????????????40%?????????83%?

??48.2009?6?????????88%?????????????3?????????????????41%?????26%?

??47.???????????Center for Responsive Politics??2012????????????60????????????2000?????60%??

??46.2010?????????????????????????1998???37.7%?

??45.??????2009??????1997?????????????????3700??

??44.2009?11????????????10%????????????????????48.5%?45?????????????????3.7%?

??43.2010???????????????????????160??

??42.?????????????????????????????????????????

??41.??????1.8%????????????????????4.8%?

??40.2009??5%???????50%????????

??39.2000-2010???500???????500??????????2?????

??38.??????????1/6?????????

??37.4990???????????

??36.????????????????20%????????????????????1979??54%??2007??36%?

??35.??????????????????90????????

??34.????????????????2009??????????LSAT?????????20%?

??33.2007-2009?????????????????(Sheldon Adelson)?????????240????????????????????

??32.????Pray??????????????140???????2008??????????????

??31.?????????Lisa Kahn???????????????????????????????????????

??30.60??????????????360????

??29. ?????????????10.8??????????2000??????

??28.???????????????????????????????????1/4???2500????

??27.2011??????2.3?????????????(Social Security)?????(Medicare)?????(Medicaid)???????????

??26.??????????????????2005????40%?????????????30%?

??25.??(Pew)????????????????????????????????7???

??24.2011????500?334??????????????2007????????38%?

??23.??????????1990-2008?????????????????2700???????????????????????

??22.2011??4????500????????????????

??21.????(Netflix)???1/3???????

??20.2011?????????????10????

??19.????Emmanuel Saez????2009?2010?????????93%??1%??????1.56??????37%?????????

??18.2010????????????????????

??17.2010????????2015?????????�????�???????????16%??????????????

??16.????2009?????????40????????????2000??????600??

??15.?2009?????????????70??

??14.IMS Institute for Healthcare Informatics??????????????????1.1%???????4.7%?

??13.2005?????????60.3%?????2010??????49.2%?????????????????

??12.?1949????????????????????????

??11.2009?3??2012?3???????????????1996-1999??????

??10.????????2011?30%???????6????????????????

??9.?????????????????????20??50???????????

??8.???????????66.9%???2004??????????????66%???????

??7.??????????????????

??6.2008???????????????????????

??5.Roosevelt Institute???Mike Konczal???????????????????

??4.Airline Quality Rating?????2011?????????????

??3.??????????????????1.5??????????

??2.2009????????25??????????????253?????????????????2000???

??1.???????????????1994??????  


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