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??????2?????????????21????????????????????????????? ?20?????????????????????????????,???????????????????

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?????,??????????2011?,?61.8?????????,11.3???????????????????8000?????????????,??????????????????33%??90%,?????????

?,????????????????????,?,???????570????????????,????????????????,????,????????????????????????,?????????40%????????50%?????????6?????????????15?????????,???????????????70%???????????,???80%,???????????????75%,??????????????????????????????????????,????,????????1400?????????