??? ???, ???? ?? ???? ??????? 5~6? ?? ?? ??? ???? ???? ?? ????? ??.
?? ??? ???(―0.48%)? ??? ???(―0.15%), ???(―0.19%), ???(―0.23%) ? ??? 4??? ??? ?????. ?? ?????? ‘?? ??’? ??? ??? ??? ???? ??? ???? ?? ??. ??? ??? ??2? ??? 35??? 1500?? ??? 2?7000?~3?????.
????(0.15%) ???(0.09%) ???(0.08%) ???(0.08%) ???(0.07%)? ?? ????. ???? ??? ???? ??? ????? 32??? 1000?? ?? 1?7000?~1?8000???, ??????? ??? ??? ?? 31??? 500?? ?? 1?7000?~1?8000?????.
???? ???? ??(0.08%) ??(0.05%) ??(0.03%) ??(0.00%) ??(―0.01%) ??? ????. ?? ??? ??? ??1?? 49??? 1000?? ??? 1?5500?~1?7500?????. ?????? ??(0.38%) ??(0.34%) ??(0.05%) ??? ???? ???.
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