Year	% of GDP
1965	18.651172161172163
1966	18.779375
1967	19.157981927710843
1968	19.686730245231608
1969	20.02566502463054
1970	22.039954954954954
1971	22.024061224489795
1972	21.784778761061947
1973	21.713227206946453
1974	21.753877777777777
1975	21.097945454545457
1976	20.80566739606127
1977	21.496809085992428
1978	21.30987590928541
1979	21.147323989569752
1980	18.343975105755394
1981	17.907067859671493
1982	16.958966837788843
1983	17.45584334844566
1984	18.5138308938633
1985	19.14522878904603
1986	20.277128204756913
1987	20.91950401524618
1988	22.101550041647357
1989	20.226239383790183
1990	19.13556360822712
1991	18.909275360829962
1992	18.53882315603248
1993	20.542329707865463
1994	19.707466155307543
1995	21.168547410543738
1996	22.21303098141999
1997	22.36266014704055
1998	22.224724043221382
1999	21.25884530707547
2000	21.04457740818571
2001	20.02605855782381
2002	19.231226785401788
2003	18.828065610038045
2004	18.845668014305726
2005	18.077079489580434
2006	18.99902989948818
2007	18.262375773190254
2008	18.17491374444498
2009	17.433198701258355
2010	17.838213914583523
2011	17.720386022543664
2012	18.800035454389423
2013	18.10280961873548
2014	18.22892172150906
2015	19.823421378109416
2016	19.86877578829977
2017	20.161822419944322
2018	20.18936570045326
2019	19.84246419291207
2020	20.014035849452796
2021	20.84997718742859
2022	21.485424254758826
2023	20.16495315014119