?? ????31.9??????????????? ???14.5%
????:1?????????100??:?????
2???????????
3?????????150???
4???????
5??????????
????:????????????????11????22????,?????10????????,???????31.9??,???14.5%?????,???7.9??,??48.0%;?4.9??,????20.3%?110??????????,???7181???????????,?????????????8.3%;?????4502???,??20.7%?
???:???