??
? (????? ??????????????????)??,????????2??????????8??,?????50??????13????????????,??????5.3????????????????????,?????????????75%,????
??,??“???????????”????????????,??????????,???????????????????,???????
“????????????????3?????,????????7500???????????????,??????????????????95%?”?????,????,?????????????,?????????????????????“????”,??,??,????“?????????”,??????????????????,?????????????????????????,?????
??,??????????96.8%?????2.2%??????????????1%,????,???????????,?????????,??????????????????????????????????????? ???????:?????????
?????????
????????5???????????????????????????