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

??

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