Discussion board to report actual data on the components of aggregate expenditures, such as consumption, investment, government spending, and the balance of payments during the past four years. Are there any patterns that emerge with regard to how changes in one or more of the components of spending relate to our nation's GDP? Lastly, comment on the variability of each of the various components of aggregate demand. Are there apparent differences in the variability of the four spending sectors that make up GDP?