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????? ??? ???? ??????? ?????? ?????? ???? ???? ???? ????? ???????? 22 ???? ????? ?? ?????. ???? ?????? ?? ??????? ???? ??????? ??????? ????? ??? ???? ??????? ???? ?????? 24-28 ???? ????? ????? ???? ??????? 40% - 60%. ???? ?????? ???? ????? ??????? ????? ??????? 8% ?? ????????. ?? ???? ???? ?????? ???? ??? ???? ???? ????? ???????? ????? ????? ?????? ???? ?????? 254 ??? ??????? ?? ???????? ?? ??? ?????? ?????? 7?172 ??? ???? (??????? ??????=27?8 ??????) ?? ????? ???? ????? ?? ??? ???? ????? ??????? ????? ????? ???????. ??????? ??? ????? ??????? ??????? ?????? ????????? ??????? ????????? ?????? ????????? ?????? ???? ??? ????? "??????? ????????? ???????".