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

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

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

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

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

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

?? ???????????????????

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

??????????,?????????,??????????????????,?????????

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

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