?????? 60?? ?????(? ????? ?????? ??)? ? ??? ??? ?? ???? ??? ????? ??? ‘??’? ????? 1???? ??? ????? ???.? ???? 90? ?? ????? ?? ??? 5? ???? 59%. 86? ??? ???? ??? 5? ??? 23.9%? 87～90?? 41.3%? ?? ?? ??? ???.

?????? “?? ??? ?? ???? 90??? ???? ??? 5? ??? 40～50%?? ?? ?? ?”???? ???? ??? ??? △??? ??? ? ?? ??? △??? ?? ???? ??? ?? ??? ??? △??? ??? ??? ??? ???? ? ?? ???.

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