??53%??????????????

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

????(??????):6??????????17?????30?????????????,???????????,53%?????

?????????????,??????????????3.31??,???“?????”????????????“??”????????????“??”???????????????4.8????????,?????????12.8?????????????,??1978????5.05%??????????13.84%??????????4?????,???????????????515??????????????????1000???????????,?,2019???????????????2000??????????40%??????????,?????????,4.5???

?????????,???“???”,“????????????”???????,??????,??????“????”?

???:???