2. Using data from the World Development Indicators to find out the real GDP per capita of the United States and that of China in 2020. Suppose that the United States and China have the same production function, savings function, and law of motion for physical capital, as follows: Yus = A(KUS )1-a (Lus and Ych = A(Kch)1-a( Ichya us = GY,us and Sch "ch = gYch it1 = (1 - 6)kus + /us and it = (1 - 8)kich + Ich, where Y, denotes output, K, denotes the stock of physical capital, L, denotes population, S denotes savings, and I, denotes investment. The superscripts us and ch denote, respectively