?? ???????????????31.9??? ????14.5%
????:1????450???:????????
2?????16????
3???????
4?????
5??????????
?????????????:???11???22???,?????10??,??31.9????????????????,???????????14.5%?????,????????7.9????,??48.0%;?????4.9????,??20.3%?110???????,????7181???,??8.3%;??4502?,????20.7%?
???????????:???