The National Income and Product Accounts (NIPAs) provide comprehensive data on government receipts at all levels. Since 1970, current government receipts have averaged 29.0 percent of gross domestic product. Of that total, federal receipts accounted for 18.6 percent and current state and local government receipts, excluding transfers from the federal government (which are netted out in the total government figures), were 10.4 percent of GDP. Research shows that state and local current receipts tend to be more stable as a share of GDP than federal current receipts.