?? ???????????????????5.1%
????:1???????:???????????
2?????VX
3????????????
4???????????
5??????????
??????10??14????? (?? ????????????????????)???????????????????14????????????????,?????????????????????????4.62??????,????????????????5.1%?
???,?????,??????????????????????8.6%?13.4%;?????????????????????????????14.4%?34.3%???,??????????????????????????
????,????????????????????????????????????,???????????,????????????????????,???????????????,?????
?????????,????????????????“?”???????????????????????,????(??????) ???:?????