日期	单位净值
2015-05-15	1.0798
2015-05-08	1.0789
2015-04-30	1.0782
2015-04-24	1.0777
2015-04-17	1.0771
2015-04-10	1.0765
2015-04-03	1.0759
2015-03-31	1.0757
2015-03-27	1.0753
2015-03-20	1.0747
2015-03-13	1.0738
2015-03-06	1.0732
2015-02-27	1.0727
2015-02-17	1.0718
2015-02-13	1.0713
2015-02-06	1.0707