?? ????31.9??????????????? ???14.5%
????:1?????????????:??????100?????
2?????????
3?????95?98?
4?????vx
5??????????
???????????:?????11??22???????,????10????????????????,??????????31.9??,???14.5%????,?????????????7.9?????,???48.0%;??4.9??,??20.3%?110????????,?7181????,??8.3%;????4502????,??20.7%?
?????:????