日期	单位净值
2017-08-31	1.0333
2017-08-25	1.0413
2017-08-18	1.0194
2017-08-11	0.9638
2017-08-04	0.9771
2017-07-31	0.9577
2017-07-28	0.9577
2017-07-21	0.9528
2017-07-14	0.9891
2017-07-07	0.9957
2017-06-30	0.9770
2017-06-23	0.9733
2017-06-16	0.9638
2017-06-09	0.9665
2017-05-31	0.9410
2017-05-26	0.9482