Year % of GDP 1960 21.662669243638476 1961 16.97301397436739 1962 16.07207367223702 1963 18.115392884161555 1964 16.30722782362931 1965 16.556937836218623 1966 14.194921720015897 1967 20.573312710345242 1968 22.064021467797502 1969 24.79227066318979 1970 29.074323288079306 1971 35.51464612751577 1972 31.194263330799473 1973 30.73103740105836 1974 32.63290612304898 1975 32.50254175623621 1976 34.93658556220912 1977 39.864020820344415 1978 36.38933912156274 1979 30.85402370066181 1980 28.037678866601052 1981 44.689875130925394 1982 38.492523293660064 1983 35.14864042293988 1984 43.286583460833874 1985 50.683132644040526 1986 43.03563568661764 1987 38.97818956641916 1988 49.00490165915857 1989 42.534938100118964 1990 28.21478479715459 1991 28.744922242080527 1992 53.854288752578796 1993 41.98617776516015 1994 51.87488136475016 1995 53.741953150413615 1996 50.06106328655805 1997 48.71486125846898 1998 46.55628711519836 1999 31.843202017506883 2000 28.551205791091416 2001 27.194202295417025 2002 27.966241381620122 2003 26.78876163178779 2004 23.633862659843494 2005 24.300911224537238 2006 27.921082167737016 2007 37.75225528690414 2008 36.48443866582824 2009 33.77272959649451 2010 34.98562447900969 2011 33.09542357931685 2012 33.945592275711626 2013 39.879068246789075 2014 48.08601459996009 2015 37.25799100664298 2016 39.3027165030984 2017 44.954768679770844 2018 54.12129530532872 2019 48.53131364709589 2020 41.761380715452475 2021 45.29721014391136 2022 47.929983537677714 2023 42.21460794449384