日期	单位净值
2017-04-21	1.0256
2017-04-14	1.0255
2017-04-07	1.0280
2017-03-31	1.0297
2017-03-24	1.0291
2017-03-17	1.0301
2017-03-10	1.0300
2017-03-03	1.0305
2017-02-28	1.0299
2017-02-24	1.0338
2017-02-17	1.0327
2017-02-10	1.0318
2017-02-03	1.0328
2017-01-26	1.0330
2017-01-20	1.0529
2017-01-13	1.0406