Year % of GDP 1960 14.285715014577297 1961 12.315271421291484 1962 13.114753729796147 1963 11.600429745223886 1964 9.971236510949598 1965 16.981670045918065 1966 18.13296123345583 1967 19.069290430100633 1968 20.74235807860262 1969 17.349636483807004 1970 18.950897166075777 1971 19.379669765907153 1972 23.500375079878122 1973 20.043383110724243 1974 21.432906085069604 1975 22.328498131373916 1976 26.538049829866893 1977 29.952392741617995 1978 27.36692989659561 1979 32.71579431648271 1980 25.333613609840604 1981 24.353832288778662 1982 29.707204737361554 1983 24.193705418347275 1984 29.276379145475623 1985 26.17438450619997 1986 29.624069795409657 1987 26.779405453348975 1988 31.134423284462116 1989 23.789771023463448 1990 27.029384458267568 1991 29.552891013600885 1992 27.053537282444605 1993 28.126020406436318 1994 37.18795936714357 1995 33.885483665997704 1996 19.101672367920944 1997 21.276677362893818 1998 24.95046995477261 1999 21.285094422485727 2000 22.745912629758468 2001 20.301217071316284 2002 19.26351535639106 2003 24.85170466512505 2004 24.364732660378987 2005 29.27187998525132 2006 38.401882389266355 2007 27.872007870335345 2008 28.538886139626683 2009 26.326792603772102 2010 30.01768791750015 2011 39.13551552756591 2012 37.92844136992707 2013 36.91456810727215 2014 33.29904468237627 2015 31.507695961778808 2016 28.02054925663163 2017 34.035997845769636 2018 36.48044742415945 2019 41.41246580242719 2020 40.41997125406919 2021 42.798492595554066 2022 43.93895737159863 2023 51.28376571105123