???? ?????????? ????? ??????????? ??????? ???? ?? ??????????? ?? ??????? ???? ??, ?? ???? ??????? ????? ?? ?? ??????? ??????? ??????? ??? ??, ??????, ???????, ?????? ??? ???? ????????? ??????? ??? ?? ??? ?????????????? ???????? ??? ??. ???? ????? ?? ?????????????? ?????? ????????? ????? ??? ??, ?? ???? ???? 15% ?? 30% ?????? ??? ??. ?? ????????????? ????? ???? ????????????, ???????????, ???????????, ???????????, ??????? ???? ??? ??????? ???? ??. ???????, ??????????? (????????? ?????????) ???? ?????????? ??, ?? ??? ?? ????????????? 60% ?? 80% ?????? ??? ??, ???????? ???????????? ??? ??, ??? ???? ??????? ?????????? ????????? ??? ??????? ??? ??.