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

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

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

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

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

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

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