6???????8?,????,????????????????????????,??

???,??2004??,??????????????????,????????????????30%???50%?

??????????????????????,??????????(? ??????? ?????????????????????????????)

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

??“?????”????

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

????:1??????:92?95?98??????

2???????????

3???98???

4?????????

5??????

6???????8?,????,????????????????????????,??

???,??2004??,??????????????????,????????????????30%???50%?

??????????????????????,??????????(? ??????? ?????????????????????????????)

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