Year % of GDP 1960 20.45332534505859 1961 19.45955537341939 1962 30.489597279561465 1963 36.472898948615565 1964 38.15260174500399 1965 36.008223043575505 1966 29.88929889298893 1967 30.479457273879667 1968 30.385836012861738 1969 32.075490319588 1970 34.73682894736842 1971 32.58172516965327 1972 28.309178743961354 1973 31.62251655629139 1974 53.22918381831086 1975 35.88807785888078 1976 40.37715474209651 1977 45.58499468085107 1978 43.721437216338884 1979 47.411764705882355 1980 60.01664816870145 1981 58.02104485877793 1982 55.267605633802816 1983 57.94544544544544 1984 61.62754303599374 1985 56.78821590440874 1986 39.833700934944275 1987 41.734306133846935 1988 40.62215477996965 1989 48.5242020194741 1990 51.7773595800525 1991 41.634588526083 1992 40.69209692168985 1993 42.83637056966189 1994 58.517021254937085 1995 64.70457015716721 1996 68.45821343386935 1997 75.59663937449288 1998 76.27762977132423 1999 72.29007106879183 2000 80.29714721919302 2001 77.42002685153541 2002 81.51642548339588 2003 80.81236559700758 2004 80.52979283329262 2005 75.00508375141783 2006 77.46412945715608 2007 68.48539072026583 2008 73.40291852881451 2009 64.47991210644497 2010 68.52809153009392 2011 73.61173273938954 2012 58.08202781995539 2013 52.934340584028206 2014 53.1336383710482 2015 40.857048793450225 2016 42.06852605008098 2017 47.96273165883941 2018 62.21059229505477 2019 56.19881616692918 2020 40.71904091124426 2021 52.83657085862333 2022 63.81214685629249 2023 56.89592780338586