Date	Rate
2007/6/20	2.29
2007/6/15	2.481
2007/6/14	2.606
2007/6/13	2.74
2007/6/12	2.808
2007/6/11	2.841
2007/6/8	3.495
2007/6/7	3.458
2007/6/6	2.983
2007/6/5	2.759
2007/6/4	2.252
2007/6/1	1.88
2007/5/31	2.998
2007/5/30	3.197
2007/5/29	3.27
2007/5/28	3.905
2007/5/25	2.622
2007/5/24	1.924
2007/5/23	1.763
2007/5/22	1.748