????
??????????????????????????????????????
????
?????й??????????
???????????????????????1?·?????о????????????????0.4%??????????????0.1??????
????
????????????????0.2%?????У??????????????6.8%??????????9%???????????????3.6%??????????14.5%????????2.9%???????????1.6%????????????????????????????????????????????????????????????λ???У??????????????????1?????????????????μ????????????????????
????
??????????????????2%???????????????????Σ????????????????????????????????????13.2%????????2008??10?·?????????????μ???????????μ??????24.6%??1?·???????7.4%???????????????????????????????????22.2%??ú??????????????????
????
??????????????????3.8%??????????????????????????豸??????????????????????????????????????????????????????????????????3.6%??4%??2.6%??0.2%??1.2%??
??????3????
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