日期	单位净值
2017-09-22	1.0419
2017-09-15	1.0418
2017-09-08	1.0419
2017-09-01	1.0394
2017-08-31	1.0391
2017-08-25	1.0385
2017-08-18	1.0366
2017-08-11	1.0365
2017-08-04	1.0354
2017-07-31	1.0331
2017-07-28	1.0326
2017-07-21	1.0322
2017-07-14	1.0306
2017-07-07	1.0302
2017-06-30	1.0268
2017-06-23	1.0248