Year % of GDP 1970 25.821510954030245 1971 25.89432031306837 1972 27.180717188904435 1973 28.107088268143116 1974 31.69547317830287 1975 29.085959998920153 1976 30.077500424486082 1977 29.163584828067435 1978 27.725213290205048 1979 27.835996977674675 1980 31.560610080093937 1981 35.38019155628353 1982 36.52842848505969 1983 39.76852471460999 1984 41.54143030056824 1985 40.86662609029602 1986 35.34734208537725 1987 36.3199600167146 1988 36.713481910794556 1989 37.3841834429039 1990 35.61073323503109 1991 35.478541249369144 1992 35.97784214885759 1993 36.94989398136975 1994 41.64447873335037 1995 44.77537408703657 1996 46.245219264804184 1997 51.166257115786074 1998 52.66145437082841 1999 54.63646694856502 2000 60.08233374649418 2001 57.99715546374928 2002 55.099179243067866 2003 53.46368910062249 2004 54.524182691692346 2005 54.762297583347085 2006 56.17713481360758 2007 57.74760375960333 2008 55.98333004368473 2009 46.994874327027475 2010 52.92824055731796 2011 58.793171035277595 2012 60.84507479361927 2013 61.976315719860445 2014 63.83826195419753 2015 64.18320514390238 2016 63.73988262952926 2017 66.6570608657952 2018 67.57494025463114 2019 66.87389051740126 2020 60.11948061232697 2021 67.3912901193661 2022 80.53650649112396 2023 73.7884340055914