??
???????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???????????????????????????