［????］??? ??? ????

?? 1998? 2? 19? 20? 05?

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▼??? ??? ????〓?? ??? ?? 23??? ?? ??? ????? 10～20% ? ?? ??? ?? ???? ???? ??, ??. △??????? △??????? ??? △??2? ???? △???? △?????? △?????? △???????? △??? ?????? ??? △????? ?? △???? ?? △??2???? △??? ????? △???? ????? △???? ?? ??? △???? ?? △??? ?? △????? ??? △??1???? △???? ??? △????? ?? △???? ?? △???? ??? △???? ???