日期	单位净值
2017-05-31	0.9966
2017-05-26	0.9964
2017-05-19	0.9960
2017-05-12	0.9959
2017-05-05	0.9955
2017-04-28	0.9953
2017-04-21	0.9975
2017-04-14	0.9991
2017-04-07	0.9964
2017-03-31	0.9949
2017-03-24	0.9987
2017-03-17	0.9990
2017-03-10	0.9989
2017-03-03	0.9986
2017-02-28	0.9982
2017-02-24	0.9975