Suppose that the an economy is initially, in the year 2020, in long-run equilibrium with zero inflation and the natural rate of unemployment, as shown at point A in the following figure. Assume that the labor force totals 100 million people. Assume further that the following is the aggregate production function: Y = 100,000N, where Y is real GDP in American dollars$, and N is the number of employed labor.

P Y Y s B 102 100 Yd' Yd 9.500 9.900 Y in billions of $