Date	Rate
2011/9/6	0.393
2011/9/5	0.393
2011/9/2	0.394
2011/9/1	0.392
2011/8/31	0.392
2011/8/30	0.394
2011/8/29	0.392
2011/8/26	0.392
2011/8/25	0.391
2011/8/24	0.389
2011/8/23	0.390
2011/8/22	0.389
2011/8/19	0.388
2011/8/18	0.388
2011/8/17	0.387
2011/8/16	0.386
2011/8/15	0.386
2011/8/12	0.385
2011/8/11	0.385
2011/8/10	0.386