日期	单位净值
2017-07-28	1.0440
2017-07-21	1.0405
2017-07-17	1.0394
2017-07-14	1.0388
2017-07-07	1.0279
2017-06-30	1.0357
2017-06-23	1.0270
2017-06-16	1.0065
2017-06-15	1.0090
2017-06-09	1.0129
2017-05-26	0.9981
2017-05-19	0.9876
2017-05-15	0.9813
2017-05-12	0.9792
2017-05-05	0.9790
2017-04-28	0.9793