日期	单位净值
2014-05-20	1.0145
2014-05-16	1.0155
2014-05-09	1.0188
2014-04-30	1.0216
2014-04-25	1.0238
2014-04-18	1.0174
2014-04-11	1.0221
2014-04-04	1.0221
2014-03-28	1.0215
2014-03-21	1.0219
2014-03-20	1.0218
2014-03-14	1.0241
2014-03-07	1.0405
2014-02-28	1.0367
2014-02-21	1.0398
2014-02-20	1.0424