Personal Taxes$23 Net Private Domestic Investment33 Net Exports6 National Income278 U.S. Exports20 Gross Private Domestic Investment56 Disposable Income220 Taxes on Production and Imports32 Undistributed Corporate Profits15 Proprietors' Income45 Net Foreign Factor Income0 Statistical Discrepancy0 Refer to the accompanying national income data. All figures are in billions of dollars. U.S. imports are Multiple Choice $26. $16. $24. $14.