Answer the question on the basis of the following data. All figures are in billions of dollars. Proprietor’s Income 20 Compensation of Employees 300 Consumption of Fixed Capital 15 Gross Investment 80 Rents 10 Interests 20 Exports 30 Imports 50 Corporate Profits 25 Taxes on Production and Imports 5 Net Foreign Factor Income 0 Statistical Discrepancy 0 Refer to the above data. Gross domestic product is: