???? ????? ??????? ?????? ?? 20～40? ?? 1000??? ‘?? ?? ?? ????? ??’? ????? ????? ?? 73.7%? ‘????’? ???.

????? ??(73.4%)? ??(74%)? ?? ????? 1?? ???. ? ??? ?? ‘???????’(11.3%)? ? ??? ???. 20?(79.9%) 30?(74.6%) 40?(66.6%)? ??? ???? ?? ????, 20?? 30, 40?? ?? ??(77.2%)?? ??(82.6%)? ? ?? ??. ???????? 40?(15.4%)? 20?(9.9%)? 30?(8.7%)?? ?? ?????, ??(12.2%)? ??(10.4%)?? ???. ? ??? ‘????’(10.7%)? 30?(13.2%)? 40?(12.7%)? ???? 20?(6.3%)?? ?? ???.

??? ?? ray@donga.com

(▲?? ??? ??? ???? ?? ???? ???? ?????. ????? ???? ? ????? ??? ? ????.)