日期	单位净值
2011-05-20	0.8998
2011-05-13	0.9097
2011-05-06	0.9215
2011-04-29	0.9351
2011-04-22	0.9858
2011-04-20	0.9899
2011-04-15	1.0058
2011-04-08	1.0144
2011-04-01	1.0014
2011-03-25	1.0158
2011-03-18	1.0071
2011-03-11	0.9976
2011-03-04	1.0032
2011-02-25	0.9999
2011-02-18	0.9994
2011-02-11	0.9999