日期	单位净值
2017-05-12	1.0379
2017-05-05	1.0307
2017-04-28	1.0363
2017-04-21	1.0415
2017-04-14	1.0338
2017-04-07	1.0449
2017-03-31	1.0403
2017-03-24	1.0502
2017-03-17	1.0340
2017-03-10	1.0234
2017-03-03	1.0201
2017-02-24	1.0261
2017-02-17	1.0162
2017-02-10	1.0129
2017-02-03	1.0021
2017-01-26	1.0050