????:1???????????????:??????

2?????

3???????

4?????????

5???????200??500

????????(???????????????????????):????????????,??,????,???????

??,???????????????????11????????????,??5.8%??????11??,??80%?????????????60%????????????,???????,???????8.7%???29.3%?????,??????????????21???30%??????????

?,11?????????????,?50.3%,??,????????????????????????????,??????????,??????????

?????????????:????????????????