Year % of GDP 1960 35.41695784422066 1961 20.152602321901732 1962 15.295319055431184 1963 20.66797740515792 1964 23.025318816109788 1965 25.588077242197848 1966 28.7070715133523 1967 22.625315195895425 1968 23.12821071893502 1969 23.399113717723637 1970 31.10468904571207 1971 31.96930321554599 1972 30.048884665244902 1973 31.41478222191063 1974 30.470582804363794 1975 32.25766485353406 1976 29.793938805855756 1977 30.443563726910888 1978 31.802626073373748 1979 31.401913529805615 1980 30.01628344974324 1981 29.209117475374214 1982 28.884638315200593 1983 30.886409883585724 1984 30.47992435053607 1985 32.83859351580814 1986 31.465833441226128 1987 30.117902333978662 1988 33.080192101808656 1989 34.15707110996832 1990 33.84148459886235 1991 34.58164908397288 1992 35.85296448582969 1993 37.84647254016968 1994 36.92072113657521 1995 36.92794816322005 1996 36.32679975989822 1997 34.26545948763655 1998 31.72931354884631 1999 30.10377565044699 2000 30.260190534682117 2001 32.189647663496736 2002 32.5611916563369 2003 35.42785786921077 2004 37.27940659189805 2005 36.556992048001916 2006 35.97699765223356 2007 36.61339278888265 2008 38.61415465941999 2009 41.18349995089989 2010 42.52900794010774 2011 42.85589910446668 2012 42.93612073585595 2013 43.19246150265077 2014 42.81145198473656 2015 40.83143953653975 2016 40.29846554455441 2017 40.73106060412578 2018 41.61689239825158 2019 40.90821591610981 2020 40.85067175379521 2021 41.17189108163143 2022 41.04146113852343