日期	单位净值
2017-07-28	1.0072
2017-07-21	1.0079
2017-07-20	1.0080
2017-07-14	1.0114
2017-07-07	1.0166
2017-06-30	1.0133
2017-06-23	0.9958
2017-06-20	0.9956
2017-06-16	0.9975
2017-06-09	1.0065
2017-05-31	0.9716
2017-05-26	0.9810
2017-05-19	0.9660
2017-05-12	0.9375
2017-05-05	0.9557
2017-04-28	0.9705