United States Uzbekistan 100* ID 100* ID 90* ID 90* ID 80*ID 80+ ID 70*ID 70* ID 60*ID 60*ID Value of marginal product of capital in Uzbekistan Value of marginal product of capital in the US 50* ID 50* ID 40* ID 40+ ID 30* ID 30* ID 20* ID 20*ID 10*ID ..... 10* ID VMPK UZ VMPK US DID 2*ID 3*ID 4*ID S*ID 6*ID 7*ID 8*ID 9*ID 10 *ID 11*DD 12* ID 13*ID 14*DD 15*DD 16*ID 17*ID 18*ID 19*ID 20*ID Total capital stock of US and Uzbekistan combined