Measuring U.S. GDP (Study Plan 21.2) 4. The table in the next column lists some national accounts data for the United States in 2008. a. Calculate U.S. GDP in 2008. Item Billions of dollars Wages 8,000 Consumption expenditure mu 10,000 Other factor incomes omni bus 3,200 Investment 2,000 Government expenditure 2,800 Net exports name -700 Depreciation comparood, 12 1,800 b. Explain the approach (expenditure or income) you used to calculate GDP