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

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

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

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

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

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

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