A??????????????
?1????21??????? (??? ????)????A???21??????????????(??)?,?????????,???
??,????????????3.89%????????????????3.26%,??????A??????????????????????????,??????20%??????,???????????????????????????????????9%?
???????,???“1+N”?????????????????????????????“1+N”?????,?100?????,??
?????,?????:??,?;??,?;?????????????????????????????,????????
?????,??????????,???2.16%????;?,????????????????10%?
????????????????,?????????,??3242??????????,?????????????????0.05%;??????10305???????????,???????????????????0.48%;????????????2112???,????????0.36%?(????????????) ??:??????????????
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???:????