Date	Rate
2015/6/8	0.388
2015/6/5	0.388
2015/6/4	0.388
2015/6/3	0.388
2015/6/2	0.388
2015/6/1	0.387
2015/5/29	0.388
2015/5/28	0.387
2015/5/27	0.388
2015/5/26	0.388
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