日期	单位净值
2017-04-28	1.0201
2017-04-21	1.0188
2017-04-17	1.0179
2017-04-14	1.0175
2017-04-07	1.0162
2017-03-31	1.0149
2017-03-24	1.0135
2017-03-17	1.0122
2017-03-10	1.0109
2017-03-03	1.0096
2017-02-28	1.0092
2017-02-24	1.0085
2017-02-17	1.0071
2017-02-10	1.0064
2017-02-03	1.0051
2017-01-26	1.0036