??3?????????????

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