日期	单位净值
2017-07-28	1.0441
2017-07-21	1.0406
2017-07-17	1.0395
2017-07-14	1.0389
2017-07-07	1.0280
2017-06-30	1.0358
2017-06-23	1.0271
2017-06-16	1.0066
2017-06-15	1.0091
2017-06-09	1.0130
2017-05-26	0.9982
2017-05-19	0.9877
2017-05-15	0.9813
2017-05-12	0.9792
2017-05-05	0.9790
2017-04-28	0.9793