Lee, Donghoon; Wolpin, Kenneth I. - Department of Economics, University of Pennsylvania - 2004
One of the most striking changes in the U.S. economy over the past 50 years has been the growth in the service sector. In 1950, 57 percent of workers were employed in the service sector, by 1970 that figure had risen to 63 percent and by 2000 to 75 percent. While service sector employment grew...