日期	单位净值
2015-05-20	1.0434
2015-05-15	1.0355
2015-05-08	0.9612
2015-04-30	0.9620
2015-04-24	0.9591
2015-04-20	0.9495
2015-04-17	1.0032
2015-04-10	1.2245
2015-04-03	1.1770
2015-03-27	1.1015
2015-03-20	1.0451
2015-03-13	0.9750
2015-03-06	0.9514
2015-02-27	0.9547
2015-02-17	0.9513
2015-02-13	0.9430