??
??????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%?(??) ?????????????:?????
?????????
?????A???????????????????????????