????????????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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??:???????????,??????????,??????????????