national debt to gdp ratio by countrydebt to gdp ratiogovernment debt to gdp ratiohistorical debt to gdp ratiodebt to gdp ratio by countryfederal debt to gdp ratioexternal debt to gdp ratiohighest debt to gdp ratioglobal debt to gdp ratiodebt to gdp ratio formulatotal debt to gdp ratiojapan debt to gdp ratio
