BDI

日期	数据
2008-08-15	7557
2008-08-14	7420
2008-08-13	7097
2008-08-12	6992
2008-08-11	7055
2008-08-08	7201
2008-08-07	7521
2008-08-06	7869
2008-08-05	8100
2008-08-04	8209
2008-08-01	8280
2008-07-31	8341