Date	Rate
2015/4/30	0.389
2015/4/29	0.388
2015/4/28	0.388
2015/4/27	0.388
2015/4/24	0.387
2015/4/23	0.387
2015/4/22	0.387
2015/4/21	0.388
2015/4/20	0.388
2015/4/17	0.387
2015/4/16	0.388
2015/4/15	0.387
2015/4/14	0.387
2015/4/13	0.387
2015/4/10	0.387
2015/4/9	0.387
2015/4/8	0.387
2015/4/7	0.387
2015/4/2	0.388
2015/4/1	0.386