RealGDP,Y (billionsof2000 dollars) Consumption expenditure,C (billionsof2000 dollars) Investment,I (billionsof2000 dollars) Government expenditure,G (billionsof2000 dollars) Exports,X (billionsof 2000dollars) Imports,M (billionsof 2000dollars) 200 260 100 100 50 70 400 420 100 100 50 90 600 580 100 100 50 110 800 740 100 100 50 130 1,000 900 100 100 50 150 1,200 1,060 100 100 50 170 1,400 1,220 100 100 50 190 1,600 1,380 100 100 50 210 1,800 1,540 100 100 50 230