?? ??(―0.02%)? ?? ??????? ?? ???(―0.57%)? ???? ?? ??. ??? ??4?? 34??? ?? 2000???? ??? 6?8000?～7?2000?????. ???(―0.09%) ???(―0.09%)? ??????? ??? ?? ??? ???(0.15%)? ??????.

???? ???? ?? ??? ????. ???(0.52%)? ‘????’ ?????? ?? ??? ???? ??. ???(0.35%) ???(0.33%) ???(0.21%) ???(0.18%)? ‘??? ??’ ?? ??? ??? ?????. ??? ??? SK ????? 33??? 500?? ??? 2?2000?～2?60000?? ?.

???? ??(0.11%) ??(0.08%)? ???? ??(―0.01%) ??(―0.03%) ??(―0.05%)? ?????. ??? ??? ?? ??? ???? ??? 7?? ????? ????? ??? ???? ????. ?????? ??????? ???? ?? ???? ???? ??(―0.40%)? ???? ????? ??.

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