日期	单位净值
2021-05-21	1.2798
2021-05-20	1.2788
2021-05-14	1.2800
2021-05-07	1.2792
2021-04-30	1.2813
2021-04-23	1.2854
2021-04-20	1.2908
2021-04-16	1.2880
2021-04-09	1.2921
2021-04-02	1.2952
2021-03-26	1.2847
2021-03-19	1.2831
2021-03-12	1.2872
2021-03-05	1.2835
2021-02-26	1.2758
2021-02-19	1.2917