Year % of GDP 1965 66.27596385410497 1966 85.31970056046691 1967 57.470128481940705 1968 71.65142979300808 1969 50.628996720502265 1970 60.227684086796465 1971 52.88590042624415 1972 52.384320107231964 1973 53.3329699813993 1974 57.442200425413446 1975 45.05134914555001 1976 43.42548375040301 1977 43.24275919644758 1978 43.756284696671166 1979 41.5626754920812 1980 43.69834878513157 1981 46.568392451122264 1982 44.3402302350595 1983 44.30840609523435 1984 43.07758179043246 1985 40.66889693439624 1986 35.216547643393874 1987 34.05555553379933 1988 32.421559738618775 1989 32.177959306108086 1990 31.35391516544519 1991 30.527152297637596 1992 26.872847898015014 1993 27.90152950575 1994 29.677999515461757 1995 28.612410926066357 1996 30.55635491907431 1997 30.801047056888148 1998 32.409416509208164 1999 30.141103280741287 2000 33.11253237142361 2001 35.032654387390224 2002 37.19669981958165 2003 35.33030666194615 2004 30.534982333609857 2005 34.004947794496566 2006 32.170817454438705 2007 31.06547145022039 2008 33.12436110864538 2009 28.323845083935833 2010 30.87086666277285 2011 31.657301461848114 2012 32.39146256470388 2013 32.361670192504626 2014 31.453203539094353 2015 31.11242584617641 2016 30.270856069846 2017 30.685612447358384 2018 38.79307093335742 2019 37.112213508789424 2020 30.55651244680903 2021 34.14278480461837 2022 40.01952850556595