????:1?????????:??????????

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

3?????

4?????????

5????????

??????????????????12????????????20????????????? (???? ?)?????????????????????20????,????????????????2000???

?????????????????????????,????????????2004?9?????????????????????????????28??????,???????????,?????????(2005?????????)??????????100????????100?????????????????20??,???2.3??????

????????????????,??1400?????????2000??????,????????????????????,?????????1000?????????,??13%,?????????50%?

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

?????11?,????????,??????????????????????(???????????) ???:????