????????????21???? ?????????

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

21???,???????????????????????,?????,????????????,?????????21??????

9????????????????24???28?,???????21??????????????????,?????????????,?????????????????????????15??????,??????

???????????,?10??,????????????2.3?????,??????????????????????

?????8????,?????????????2441.3????????,???21.8%,???????????52.6%,?????????????????????????????

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????21?????????????,???????????????????,?????,?????????????????????

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?,???,?,??????????2100????????,??????????????9??????????,????,??????????3.1??,?????????????6500??,??,????????????????????2?????

??????????????:???????????,??????????????????????,??? ????????????:????????????????????