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?????????,“??????????”?????????????4.8???????,??12.8??,?????????1978??5.05%??????13.84%????????4??,??????????515???1000???????,??2004??74.1%????????????2019???????62.3%????10??,????9.2???,??????30???12.5?,??????????

??,???????1997??«??????»?????????????,???????????«???????????»??,??????????????,??????????“?”,“?????”??????,??????,?,?????“?????”?(??) ???:??????????