1/May/2011,0.0220,273.10 2/May/2011,0.0214,266.37 3/May/2011,0.0199,246.71 4/May/2011,0.0166,206.22 5/May/2011,0.0212,263.37 6/May/2011,0.0177,219.68 7/May/2011,0.0214,266.10 8/May/2011,0.0214,266.01 9/May/2011,0.0203,252.66 10/May/2011,0.0171,213.11 11/May/2011,0.0210,260.90