McKesson Corporation’s annual report for the year ended March 31, 2009, includes income statements for three years: ending on March 31, 2007, 2008, and 2009. Net income for these three years is as follows (all in millions): $913 (2007), $990 (2008), and $823 (2009). Further analysis of the same income statements reveals that revenues were the following amounts for these same years (all in millions): $92,977 (2007), $101,703 (2008), and $106,632 (2009). State each year’s net income as a percentage of revenues and comment briefly on the trend you see over the three-year period.