?? 1999-06-28 19:341999? 6? 28? 19? 34?
????
???? ??
? ?? 5??? ??? ??? ?????????? ?? 0.02%? 0.60%?? 0.01%? 0.50%? ?? ???.
????? ??? 7??? ????????? ??, ???? ??? ????? △1000?? ?? 0.19% △1000????~5000????? 0.17%+2000? △5000???? 0.15%+1?2000?? ???? ?? ????.
??? ?? ?????????? 0.020%? 0.50%? ?? ????.