Macroeconomics 12th Edition by Rudiger Dornbusch ,Stanley Fischer,Richard Startz

Exercise 4

Table 20-2 shows how the U.S. government's spending has changed over the last several decades.
a. Calculate how much total spending as a percentage of GDP has increased since the 1960s.
b. In the 1960s (due largely to spending for the war in Vietnam) defense spending was the single largest component of total outlays. What has been the largest component since then
c. What types of outlays does the table suggest are responsible for growth in total spending since the 1960s