????? ??? ????? ????? ?? ??? ??? ???? ??? ‘???? ???? 28?’? 10? 7??? ????. ????(WTI·?? ?? ???? ???)? ???? ???? ???200??? ???? ???? ? ???.

???? ??(2010? 10? 6?) ? ???? ??? ????(2009? 10? 8? ??)? ??? ??? ? 5.55%? ???? ?? ? ??. ????? ?????? ???? ??? ???? ? 1.0%? ?????? ????. ????? ???200? ???? ????(2009? 10? 8? ??)? 130%? ??? ??? ?? ??? ?? ? 17.3%? ????. ??? ? ???? ????? 130%? ??? ? 6%? ????, ??? ???? ? 0.5%? ?????? ?????.