Year % of GDP 1960 23.933913820049117 1961 23.33743842364532 1962 25.6054064201239 1963 26.342398884239888 1964 23.47207179328485 1965 26.685236768802227 1966 26.47798742138365 1967 26.01626016260163 1968 24.03846153846154 1969 23.252444766388987 1970 24.35854990895547 1971 24.400737553779965 1972 24.019138755980862 1973 28.319879708768596 1974 26.797696663969923 1975 32.21663410781828 1976 29.886403131688223 1977 29.644942010808133 1978 30.108241802079732 1979 27.396075823079478 1980 22.285487980720138 1981 22.9537476334998 1982 29.403914173295092 1983 24.03904140897173 1984 25.819869899007543 1985 22.842857739088664 1986 25.70734512628274 1987 23.99218129499737 1988 23.138804981462208 1989 23.156469428327036 1990 23.92629044551764 1991 26.96562201080368 1992 29.065096102908306 1993 28.38636049966341 1994 27.197538759643148 1995 27.18656547539559 1996 27.274420793495064 1997 29.35905991686973 1998 32.58247806345083 1999 27.28735713452058 2000 27.323030048084142 2001 25.255673201285227 2002 27.715805288415417 2003 26.367101992085267 2004 26.3258755715318 2005 32.09379843071761 2006 32.766134163444036 2007 34.26625469459118 2008 37.96046490362093 2009 32.90444908733171 2010 34.32417010967455 2011 38.38869357102098 2012 37.78256454356252 2013 37.138428001622955 2014 41.971381571581375 2015 37.06454916140027 2016 31.91302896321084 2017 31.80050838907989 2018 31.121169553100774 2019 31.430044444108123 2020 25.23067283096221 2021 31.196050653479716 2022 35.144343915337814 2023 31.569139178280864