1/May/2011,0.0442,549.24 2/May/2011,0.0492,611.95 3/May/2011,0.0456,567.30 4/May/2011,0.0420,522.38 5/May/2011,0.0487,605.14 6/May/2011,0.0374,464.28 7/May/2011,0.0403,501.45 8/May/2011,0.0491,609.90 9/May/2011,0.0451,560.30 10/May/2011,0.0380,471.94 11/May/2011,0.0437,543.46