[6·4 ?? ??/??? ?? ???] ?? ?? ??… ???? ???
?? 3? ???? ?? ???? ???? ???? ??? ??? 20? 38.5%, 30? 24.9%, 40? 33.1%? ??? ?? ? ?? 50? 57.5%, 60? ?? ??? 76.5%? ??. ?? ??????? ??? ??? 20? 69.9%, 30? 74.5%, 40? 66%? ??? ????, 50??? 41.8%, 60? ??? 23.1%? ????.
?? ??? ????. ????? ???? ???? ??? ??? 30? ???? 28.6%? ????, 60? ?????? 77.6%? ??? ?? ??? ????. ?? ??????? ??? ??? 30? ??? 71.4%, 60? ???? 22.4%? ???? ????.
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