???31.9???? ???????????????14.5%

????:??????:????vx

??:????????????????11????????22????,????10????,??31.9??????????,???14.5%????,?7.9???????????,??48.0%;???????4.9??,??20.3%?110????,???7181?????,???8.3%;????4502?????????????,??20.7%?

???:??????