????31????????????

????????2????14????? (? ????)???????????14?????????????????????????,????8.5????????????????????,????????????????????????????39.2%,???1993?????????????,?????,???????????????,??,??????????????????????

??,?,???????????????????“?,?‘???????’????????????????????????????????????????????????????‘????????’???,??50%,?????????,???”?????

???????,??????????????????????????,????????????,???????????,???????????????80????

?????????12??????,??????,??????????????

“??????,?,????,???”???????????????????????????????

?????????,?????“????????????????????????????????”?????????????“???”?????,??????????????????????,?????????????????,?,??????????????????????????(?????????)