日期	单位净值
2017-05-31	0.9935
2017-05-26	0.9937
2017-05-19	0.9951
2017-05-12	0.9953
2017-05-05	0.9955
2017-04-28	0.9957
2017-04-21	0.9959
2017-04-14	0.9961
2017-04-07	0.9964
2017-03-31	0.9966
2017-03-24	0.9968
2017-03-17	0.9970
2017-03-10	0.9972
2017-03-03	0.9974
2017-02-24	0.9976
2017-02-17	0.9978