The accounting firm of Deloitte & Touche is the largest international accounting firm in the world as ranked by total revenues. For two recent years, Deloitte & Touche reported the following for its U.S. operations:
Current Year Previous Year
Revenue (in billions) ............................................ $10.9.........$10.7
Number of professional staff (including partners) .........36,571...... 33,605
a. For the current and previous years, determine the revenue per professional staff.
b. Interpret the trend between the two years.