Year	% of GDP
1970	16.074697922047243
1971	16.918115852232063
1972	17.165797996484887
1973	17.291263598003788
1974	17.884416748798188
1975	19.041540973339192
1976	19.021358475862485
1977	19.326958338699633
1978	19.650050154643612
1979	19.643769532233623
1980	20.010387364494413
1981	20.680734738378803
1982	20.677311540880066
1983	20.714826955839847
1984	20.459463717787234
1985	20.519451296906176
1986	20.32592103306417
1987	20.54614105371046
1988	20.246301699314145
1989	19.759533432036246
1990	19.919311072152933
1991	20.079851422046204
1992	20.48753736480255
1993	20.810705455321585
1994	20.47544814221135
1995	20.225040273235155
1996	20.29495263369704
1997	20.02666056877563
1998	19.73806020666885
1999	19.819235271036007
2000	19.650916913486675
2001	19.72417662573872
2002	20.096881041409965
2003	20.398026398031565
2004	20.20532436568641
2005	20.274860453506168
2006	20.09396855554329
2007	19.774857864274455
2008	20.263731128335973
2009	21.8659665814676
2010	21.609794398466047
2011	21.18389495376666
2012	21.229053951167412
2013	21.330280299287292
2014	21.19134938569408
2015	20.846077152975624
2016	20.810176054747437
2017	20.58638652863314
2018	20.5147131820624
2019	20.5816282122726
2020	22.372190974508822
2021	21.90122669087714
2022	21.334079977732106
2023	21.077871652530234