????:1????????????:????????

2?????vx??

3?????

4?????95?

5??????

?????9????20??????? (???????? ??????????)??????,????????A?20??(?????????)??,?,?,??????????,????????????????

???????????,?2.58%,?A?????????????????,???20%???,??????????9%?

?,????,??,??????????,??,???????,????;??????,?????????(20?????????)??????,??,?????????????

?????,?2.39%??,??????????????????????????????,????3%?

????????????????,????????????19??,?????12???0.62%,??????2614.6??????,????

?????????????????,A??,?????,????,??????????

????????????????,?,??2736??,???????0.03%;???8075??????????,?????0.15%;??????????1536?????????????????,??????????0.64%?(??????) ???:?????????