?? ???5?????????????????????
????:1??????:??????????
2?????????
3???????
4???????a???
5???????
???????6??19??? (??? ?????????????)?????19?,????????????????5?????,????????1120????
??5??167.9???,?????????????18.4%?????????20.8%???4.8?????80.3%,??????????????28%?
??5???,?????????????40.7%??882???????????,???????45.7%,??37.5%?
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