日期	单位净值
2017-05-31	1.8175
2017-05-26	1.8211
2017-05-19	1.8122
2017-05-12	1.7981
2017-05-05	1.7912
2017-04-28	1.8177
2017-04-21	1.8374
2017-04-20	1.8334
2017-04-14	1.8187
2017-04-07	1.8564
2017-03-31	1.8486
2017-03-24	1.8712
2017-03-20	1.8456
2017-03-17	1.8402
2017-03-10	1.8190
2017-03-03	1.8028