???? ??? ??? ??? 5%? ??? ??? ??? ??? ??? ????. ?????? ?? ???? 5??～???? 2??? 1?2251?? ???? 5? 21～31?? ??? ‘???? ??? ?? ????’ ??? 30? ????. ???? ??? ???? ? ???? 7.9%? ?? ??? ?? ???? ???? 16.5%? ‘???? ??? ????? ??? ??’? ???. ???? ??? ? ????? ???(4.9%), ?? ?? ?? ??? ??(4.7%), ????? ??(1.9%) ? ???? ??? ??? ??? ?? ???. ??? ‘? ???? ???? ???? ??(14%)’, ‘? ?? ????(16.1%)’ ? ??? ??? ?? ??? ?? ??? ????.