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

2?????

3??????95?98??

4?????

5??????

?????????????????????10????????????9???? (?????????????? ???)???????????????????????????????,???????????????,????????

?????9????????????????,??9??????????,??????????16.7???????14.4,?????????

???????????????????(Alan Vallance)??:“??????????????,?????,???”

???,?????????220???????????????????,?10??30???????

??????????????,29%?,??????????2004??,??16%???

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