Year	% of GDP
1960	8.220377031580822
1961	8.006089727110943
1962	7.923983195550275
1963	7.955158067716694
1964	8.37390358510693
1965	8.40896876816473
1966	8.82904140357292
1967	8.80691833714405
1968	9.371377280224797
1969	9.482941733241718
1970	10.049632078390418
1971	10.023041878947721
1972	10.720005988964077
1973	12.557956051169292
1974	16.3329196990373
1975	15.323743317982245
1976	15.86651608176354
1977	16.09401349891551
1978	16.593085172642635
1979	18.233477337071893
1980	19.57348655900154
1981	18.638691763704177
1982	16.425785303555394
1983	15.526478115842872
1984	16.810049950312155
1985	15.793916265828615
1986	15.842941325899902
1987	16.442972611678744
1988	17.613780014043332
1989	17.695508291032944
1990	17.712853249418146
1991	17.462375628500713
1992	17.795950505687355
1993	18.18677598482662
1994	19.352698006502795
1995	20.815687996172045
1996	20.95608610308836
1997	21.70081872993348
1998	21.10895907065251
1999	21.47433938970642
2000	23.305410273075083
2001	21.159130089000115
2002	20.30178732130376
2003	20.60884984593572
2004	22.17864379721619
2005	23.33591796718413
2006	24.38640114487815
2007	24.95751140829813
2008	26.537897524456906
2009	20.861090697703585
2010	24.223891201261235
2011	26.807980092496443
2012	26.618950478073668
2013	25.855864353126318
2014	25.672525763441993
2015	23.46143728661428
2016	22.1491376756261
2017	22.663449433035318
2018	23.228927008901913
2019	22.01547487608752
2020	20.206393506546533
2021	22.276503681442158
2022	23.718753038176573
2023	21.46275578992288