Year % of GDP 1966 43.57732742241925 1967 47.18984830805134 1968 50.9933527696793 1969 51.09171094580234 1970 40.90885727397889 1971 37.18131004366812 1972 40.755743243243245 1973 42.38109375 1974 43.71549725442343 1975 43.614597839135655 1976 46.354887322832475 1977 47.51711747446156 1978 59.88797433035714 1979 63.2552130474224 1980 63.59847278825568 1981 66.75703113336472 1982 59.63816024222385 1983 62.48225097971396 1984 64.78919131529264 1985 53.91661641731612 1986 56.09831985065339 1987 59.28690415171707 1988 58.45328265183487 1989 65.27742021778849 1990 71.58267908508502 1991 34.66402724089106 1992 36.85037697820721 1993 36.43790647851441 1994 28.6764609354065 1995 35.501148992287305 1996 29.155722781593063 1997 25.385295551674314 1998 28.565387616060985 1999 28.015936439681475 2000 30.5611455661123 2001 25.108465052698843 2002 32.48556633568344 2003 37.76500658909405 2004 29.339516693309143 2005 30.115432616668443 2006 29.339756243141835 2007 26.26088700536289 2008 24.613899281095545 2009 26.0312868996824 2010 26.344700149649412 2011 25.780297578409 2012 27.85899087936075 2013 26.48275499642903 2014 36.421035331265436 2015 33.34117198722804 2016 30.10989187250251 2017 36.52959988493772 2018 41.38268255320064 2019 34.42825459671297 2020 37.87857313853651 2021 35.480648061683624 2022 30.969188290162585 2023 35.1411286748104