For cross-country comparability, expenditure and fiscal balances of the United States are adjusted to exclude the imputed interest on
unfunded pension liabilities and the imputed compensation of employees, which is counted as expenditure under the 2008 System of
National Accounts (2008 SNA) recently adopted by the United States, but not so in countries that have not yet adopted the 2008 SNA. Data
for the United States may thus differ from data published by the U.S. Bureau of Economic Analysis. See Box 1.1 in the April 2014 Fiscal
Monitor for details