??????? ?????? ???? ???? ?? ??? ???? ????? ????? ?????? ???????. ?????? ???? ??? ?? website ???? ???? ?? ??????? ???? ???? ??????? ?? ???? ?? fluctuation ???? ??? ???? ??? ??? ?????? ?? ??? ?????? ????. ???? ???????? ????? ?? ?????? ????? ??? ????? ???? ????? ???? ??????????? ????? ? ?????? ?? ???