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??? ???? ???????? ????? ??? ???? ???? ?? ??? ??=??? ?????
????? ???? ??? 20% ????. ?? ?? ?????? ??? ??? ??? ????? ??? ???.
??? ??? 21?(????) ?? ???? 19.33% ?? 27.58??? ????. ?? ???? ???? ??? ?? ??????(GM)? 4.8% ????.
???? ??? ??? ??? ???? ???? GM ??? ??? ???? ????. ??? ??? 20? ?? ??? ?? ???? 21? ?? ????.
???? ?? ?? ?? GM?? ?????? ??? ???? 40% ???? 50???? ????. ??? ??? ????? ???????? ??? ???? ????? ???? ??? ??????. ??? ????? ??? ???? ? ?? ???? ????.
GM? ???? ?? ??? ??? ??? ???? ???? ??? ????? ??? ?? ??? ??? ??? ???? ???? ??? ???.
?? ???????(SEC)? ????? ?? ??? ???? ??? ?? ??? ??? ??? ???? ????? ????? ????.
?
(??=??1)