????? ???? ???? ???? 17? ??? 20? ?? 1000?? ???? ??? ?? ???????? ‘??? ????? ?? ??? ??? ??? ???’? ??? 37%? ‘?? ??’? ??, ‘?? ??’? ?? 41%?? ??? 78%? ?? ??? ?? ??? ??? ????. ?? ??? ?? ??? ‘?? ??’? ??? 20? ?????? 26%? ???? 30? 35%, 40? 40%, 50? ?? 48%? ??? ??? ?? ??? ?? ??? ????.

?? ??? ????? ???? ‘???? ? ????’? ??(53%)? ‘???? ? ????’? ??(47%)? ???? ????. ? ? 20, 30? ?????? ???? ???? ??? ? ???(63～64%), 40? ????? ???? ???? ??? ? ???(58～60%).

??? ?? ??? ????? ???? ??? ?? ?? ??? ?? ?? ??? ??? ???. ??? ??? ??? ?? ??? ???? 79%? ‘?? ??? ?? ?? ??? ??’? ???, ‘?? ??? ?? ??? ?? ??’(7%)?? ‘??? ??? ?? ??? ??’(14%)? ??? ?? ???. ???? ???? ??? 77%? ??? ??? ??? ???? ???.

??? ??? ?? ??? ???? ???? ?? ?? ????? ???? ??? ?? ?? ??? ????. ????? ?? ??? ? ?? ‘??? ????? ?? ????? ??? ???’? ???? 48%? ‘???’? ???, 52%? ‘??? ??’? ???. ‘???? ??? ???? ???? ????’? 58%, ‘???? ?? ???? ???? ????’? 73%??. ? ? ??? ?? ????? ???? 33%??, ??? ??? ???? ???? ???? 12%??.

????? ??? ??? ??? ?? ??? ‘?? ????’ 18%, ‘??? ?’ 37%? 55%? ??? ???? ???. ‘????’? 30%, ‘???? ??’? 15% ????. ??? ???? ????? ?? ??? ?? ??? ??? ????? ?? ???.

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