Date	Rate
2011/9/19	0.394
2011/9/16	0.394
2011/9/15	0.394
2011/9/14	0.393
2011/9/13	0.393
2011/9/9	0.394
2011/9/8	0.392
2011/9/7	0.392
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