The textbook provides a lot of useful data about taxes and government spending in the United States over the past several decades. In general, what has been happening with government spending since the 1960s? a. Government spending has been falling consistently, from about 30% of GDP in 1960 to almost 12% today. b. A large part of government spending is classified, so we don't really know if it has been going up or down. c. Government spending has gone up and down on various occasions, but there is no general trend. Total government spending as a share of GDP has stayed between 18% and 22% for many years. d. Government spending has been rising consistently, from about 12% of GDP in 1960 to almost 30% today