Date	Rate
2015/5/25	0.387
2015/5/22	0.388
2015/5/21	0.388
2015/5/20	0.387
2015/5/19	0.387
2015/5/18	0.387
2015/5/15	0.387
2015/5/14	0.387
2015/5/13	0.388
2015/5/12	0.387
2015/5/11	0.387
2015/5/8	0.387
2015/5/7	0.387
2015/5/6	0.388
2015/5/5	0.387
2015/5/4	0.388
2015/4/30	0.389
2015/4/29	0.388
2015/4/28	0.388
2015/4/27	0.388