Year % of GDP 1960 15.208096087379678 1961 11.98989231097267 1962 14.075525649563655 1963 15.780906235374886 1964 11.127429679548754 1965 10.376457409948538 1966 11.642605417141128 1967 12.49266037291795 1968 11.888164885294227 1969 12.797426633059802 1970 10.33744408092327 1971 12.615188915543923 1972 14.035643197271522 1973 13.322168511557578 1974 13.19157985763214 1975 11.802724294775576 1976 15.09688462425186 1977 16.94228656793501 1978 14.323796372436885 1979 12.840684641136773 1980 11.545672460684356 1981 14.292977478883442 1982 15.611486099988559 1983 14.987670106859074 1984 12.346381429221665 1985 18.009425070688028 1986 14.486032792139502 1987 15.44896988295196 1988 15.743458608705046 1989 19.637797701883777 1990 14.990858999944138 1991 13.75305415888915 1992 14.730980586353045 1993 16.223151447783952 1994 18.134345866998135 1995 19.771423090375507 1996 21.50646840572148 1997 23.33617884374392 1998 23.35002797306892 1999 21.382744962489816 2000 22.622444777734284 2001 21.852255451545282 2002 41.75272435856421 2003 40.64474803110855 2004 40.69264610894695 2005 40.551270970623804 2006 40.43347987191512 2007 40.94517061857098 2008 40.402673379038234 2009 34.05712690548787 2010 34.97101326356957 2011 35.20615499996436 2012 30.526542371710804 2013 29.33392900210371 2014 28.406793645227452 2015 22.48622608897916 2016 26.093887848879856 2017 25.28960113767786 2018 30.762535954992597 2019 32.630615045849886 2020 30.203698807415957 2021 32.93002425452979 2022 31.650513975650558 2023 26.97181653224615