日期	单位净值
2017-08-04	0.9991
2017-07-31	0.9991
2017-07-28	0.9991
2017-07-21	0.9991
2017-07-14	0.9992
2017-07-07	0.9992
2017-06-30	0.9992
2017-06-23	0.9992
2017-06-16	0.9993
2017-06-09	0.9993
2017-05-31	0.9993
2017-05-26	0.9993
2017-05-19	0.9994
2017-05-12	0.9994
2017-05-05	0.9994
2017-04-28	0.9994