日期	单位净值
2015-05-20	1.0638
2015-05-15	1.0616
2015-05-08	1.0643
2015-04-30	1.0602
2015-04-24	1.0706
2015-04-20	1.0685
2015-04-17	1.0688
2015-04-10	1.0613
2015-04-03	1.0600
2015-03-27	1.0595
2015-03-20	1.0624
2015-03-13	1.0632
2015-03-06	1.0618
2015-02-27	1.0619
2015-02-17	1.0595
2015-02-13	1.0577