???? ???????????? ? ??? ?? ??(??? ??～?? ???)? 18? ???? ?? ???? ???? ?? ??(2003～2007?) ?? ? ??? ??? ?? ??? ????? 6? ???.

?? ?? ? ?? ???????? ??? ?? ????(??? 258.8?) ??? 56.6%(??? 146.4?)? △?? ???～??1? ? ?? △???～???(?? ??? ??) △?? ???～?? ???(?? ??? ??) △???～???(??? ??) △???～?? ???(??? ??) ? 6? ???? ??? ??? ????.

? 6? ???? ??? ??? ??? 2003? 50.7%?? 2007? 62.3%? ??? ?? ??.

km? ???? ?? ??? △?? ???～??1? 17.7? △?? ???～?? ??? 16.4? △???～??? 14.5? ??? ??? ???.

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