Date	Rate
2011/7/12	0.370
2011/7/11	0.371
2011/7/8	0.371
2011/7/7	0.369
2011/7/6	0.370
2011/7/5	0.370
2011/7/4	0.371
2011/7/1	0.370
2011/6/30	0.363
2011/6/29	0.349
2011/6/28	0.347
2011/6/27	0.346
2011/6/24	0.345
2011/6/23	0.344
2011/6/22	0.344
2011/6/21	0.343
2011/6/20	0.342
2011/6/17	0.343
2011/6/16	0.343
2011/6/15	0.343