Year % of GDP 1974 33.56990901348474 1975 37.40875802919708 1976 29.72823410981697 1977 26.010634893617024 1978 23.398888502269287 1979 25.96074349019608 1980 35.76581576026637 1981 48.16318995754108 1982 59.732394366197184 1983 38.438438563563565 1984 30.39123630672926 1985 30.28430263700041 1986 29.45062752522788 1987 19.72836301515464 1988 18.619119878603946 1989 14.508723950077615 1990 17.230971128608925 1991 19.656563028489657 1992 20.58217413704276 1993 28.94356005788712 1994 52.93884115802761 1995 34.30034557848892 1996 31.720935600523198 1997 21.599026333259573 1998 24.33675332579776 1999 26.58524805078314 2000 20.91166848418757 2001 26.268759459063613 2002 22.542947408427956 2003 25.480027881681266 2004 21.905469924260938 2005 23.423331181948676 2006 25.355077410752543 2007 58.68632808541432 2008 39.545620849922734 2009 52.82920501294173 2010 38.7798118925855 2011 33.86871680651834 2012 38.15147807627572 2013 47.06191186137528 2014 54.82598074631005 2015 78.00091343914552 2016 77.82149046383229 2017 36.66445485747201 2018 26.345780582850832 2019 26.115533915228767 2020 23.255734348356967 2021 22.138676365051758 2022 20.690559704586224 2023 24.904519809940272