??? 29? ?????? ??? ??? ???????? ???? ? ?? ?????? ??? ??? ?? ???? ??.

????? ???? ???? ????????? ?????? ?? ??? ???? ???? ?? ?????? ?? ??? 5%? ???? ????? ?? ???(???? 1?5000?, ???? 5000?)? ??? ???? ??? ? ????. ??????? 2002?? ???? ???? ?????? ?? ??? 2～10%? ???? ??? ????.

????????? 2000?, ?(鹽)????? 2001?, ??????? 2003?, ??????? ????? ?? ????.

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