日期	单位净值
2017-05-12	0.9730
2017-05-05	0.9789
2017-04-30	0.9816
2017-04-28	0.9819
2017-04-21	0.9829
2017-04-20	0.9869
2017-04-17	0.9933
2017-04-14	0.9937
2017-04-07	0.9996
2017-03-31	0.9858
2017-03-24	0.9937
2017-03-20	0.9991
2017-03-17	0.9985
2017-03-10	0.9965
2017-03-03	0.9975
2017-02-24	0.9975