Which of the following statements is CORRECT? Since the mid-1940s, expenditures on national defense have increased considerably as a percentage of total federal government spending. Expenditures on national defense now account for more than twice as much federal government spending as expenditures on income security and health programs. Since the mid-1940s, expenditures on income security and health programs have increased considerably as a percentage of total federal government spending. Taken together, expenditures on national defense and on income security and health programs now account for less than half of all federal government spending