?? ??????:??????????????????????500???
????:1???????:????????????
2?????95?98?
3??????
4???????
5??????????
???,?9 ????????? 20 ????????????,“???”???500?,??76%?
???????????,???????????????????9????????????????,?????????????????????????2.5????????,12?????????????????10?,?????,????????
???????5.6?????,?????????2012??,???????????????????????????????,?????????
(?? ???????????? ?????? ?? ?? ?????????????? ????????? ???????? ???? ???? ??????????????????????????????????????? ???????? ?? ?) ??????????:????