Which conclusions about federal revenue does the chart support? Federal Revenue Trends Over Time, 20 15 to 20 22. In 20 15, the total was about 4 trillion. About 2 trillion of that was Individual Income Taxes, another 1 trillion was Social Security and Medicare Taxes, about a half trillion was Corporate Income Taxes, and the last half trillion was made up of, in decreasing order, Miscellaneous Income, Excise Taxes, Tariffs, and Estate and Gift Taxes. In 20 16, the total was about 4 trillion. About 2 trillion of that was Individual Income Taxes, another 1 trillion was Social Security and Medicare Taxes, about a half trillion was Corporate Income Taxes, and the last half trillion was made up of, in decreasing order, Miscellaneous Income, Excise Taxes, Tariffs, and Estate and Gift Taxes. In 20 17, the total was about 4 trillion. About 2 trillion of that was Individual Income Taxes, another 1 and a quarter trillion was Social Security and Medicare Taxes, about a half trillion was Corporate Income Taxes, and the last quarter trillion was made up of, in decreasing order, Miscellaneous Income, Excise Taxes, Tariffs, and Estate and Gift Taxes. In 20 18, the total was slightly