April, 2009 (prelim)   0.65
March, 2009     0.56
February, 2009     0.49
January, 2009       0.47
December, 2008   0.86
November, 2008   0.97
October, 2008   0.96
September, 2008   0.70
August, 2008 0.81
July, 2008 0.83
June, 2008 0.81
May, 2008 0.78
April, 2008 0.82
March, 2008 0.87
February, 2008 0.92
January, 2008     0.89
December, 2007 0.85
November, 2007 0.82
October, 2007 0.80
September, 2007 0.79 |