Problem 2. The average growth rate of real GDP from 1950 to 1992 was 3.2%, the capital grew at rate 2.6%, whereas Civilian employment at rate of 1.4%. a) Assuming that the U.S. aggregate production function is Y = of productivity, A. AK 0.3 No.7, estimate the growth rate b) Which of the exogenous variables had the largest relative contribution to growth over that period? (Hint: the relative contribution of capital is (0.3*2.6)/3.2 = 24.4%.) c) Using the same production function above, fill out the following table. d) Which variable was responsible for growth slowdown, starting in 70s? Sources of Growth of the United States Economy Years %AY (0.3).% AK (0.7).% AN %AA 1950-59 1960-69 4.0 0.4 3.1 4.1 0.9 1.2 1970-1979 1.1 1.5 0.3 1980-1989 2.5 0.9 1.3 1990-1992 0.6 -0.1 0.1