???? ???? ?? ‘???? ??? ????’ ?? ?????.
??? ?????? ??? 2,30? ???? 438?? ???? ??? ?????? ??? ?? ? ????.
10? ? ??? ??? ??? 9%? ??????.(10?~13? ?, 5%· 15?~20? ?,4%)
??? ??? ??? ?? ??? ??? ?? ‘???(79%)’????.
?? ??? ?? ??? ??? ???(12%), ????? ??? ??? ?? ???(4%)? ??? ???.
????? 74%? ‘???? ??? ???? ? ????? ???’? ?????. ??? ???? ?? ???(78%)? ?? ????? ???.
??? ?? aykim@donga.com