1/May/2011,0.0430,533.91 2/May/2011,0.0460,571.50 3/May/2011,0.0481,597.81 4/May/2011,0.0477,592.52 5/May/2011,0.0432,536.92 6/May/2011,0.0438,544.04 7/May/2011,0.0449,558.61 8/May/2011,0.0408,506.62 9/May/2011,0.0400,497.68 10/May/2011,0.0503,625.54 11/May/2011,0.0490,608.88