Year % of GDP 1960 20.222876430127076 1961 19.978821386752475 1962 21.790000184131493 1963 21.125710938149428 1964 21.133116541520838 1965 21.340190875737896 1966 20.972528347081173 1967 21.885595395528686 1968 22.348122575663233 1969 23.584336659854735 1970 24.585174644710662 1971 26.469673851416257 1972 28.39776695966826 1973 28.039294342128443 1974 25.36594006377436 1975 28.887382706814183 1976 33.509669723430285 1977 29.772201782375802 1978 31.26625182228599 1979 31.049650846907248 1980 29.849060100283157 1981 31.87068813203198 1982 32.5629896822938 1983 30.367433899650074 1984 29.556955706175895 1985 27.503056577216327 1986 28.160352466849336 1987 27.31289923696932 1988 23.04961541361021 1989 64.20713509533702 1990 25.868921301719624 1991 27.032589234091837 1992 34.1866926060977 1993 41.25993230044294 1994 31.28310891714245 1995 28.349220864386666 1996 29.79993416073878 1997 32.309957867615374 1998 33.17629629482872 1999 34.01487595947343 2000 32.9761575179155 2001 37.430717098083726 2002 36.87671686364824 2003 38.78602135751826 2004 38.877419758820274 2005 41.22012633077795 2006 43.0768823092345 2007 46.43112096964618 2008 47.36617061638951 2009 51.993757283945655 2010 51.80950292302002 2011 54.17366584898398 2012 55.49399379139889 2013 56.35260610542672 2014 58.27546098809921 2015 59.302267112297095 2016 62.53557728562569 2017 62.53015418261999 2018 62.115605175155 2019 63.28025159456571 2020 72.96605471093041 2021 68.84531011136309 2022 67.54819203039308 2023 70.80673032734182