日期	单位净值
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
2017-02-17	0.9967
2017-02-10	0.9963
2017-02-03	0.9979
2017-01-26	0.9985
2017-01-20	0.9975
2017-01-13	0.9996