Year	% of GDP
1960	11.663680981595093
1961	10.615254237288136
1962	10.108736842105264
1963	9.953584905660378
1964	9.853426294820718
1965	9.522673992673992
1966	9.013848684210526
1967	9.009457831325301
1968	9.35365122615804
1969	9.270985221674877
1970	9.65768018018018
1971	8.719285714285714
1972	8.829911504424778
1973	9.464804630969608
1974	10.572444444444445
1975	9.620090909090909
1976	9.867242888402625
1977	10.222195781503515
1978	11.03976893453145
1979	12.450955019556714
1980	12.291999553219354
1981	12.255706516329143
1982	9.707147739236136
1983	8.981067285742833
1984	9.105274448828181
1985	9.764977499186273
1986	12.92404266302277
1987	12.7257538385261
1988	18.69428080148621
1989	19.19745077445121
1990	19.81522536415795
1991	19.353145123815214
1992	20.29675146113697
1993	14.567138875171128
1994	16.403876421631
1995	20.799904805143946
1996	23.044691581765115
1997	23.23630342464638
1998	24.81013474485384
1999	24.595390327073133
2000	25.679235722779236
2001	23.198898804162262
2002	23.358067333030455
2003	25.04482337178276
2004	26.937264025557674
2005	27.075570823277182
2006	27.927367918041018
2007	28.477463066524088
2008	29.345220651737115
2009	28.07847240806155
2010	30.255924413885875
2011	31.719421048963113
2012	32.71848149859835
2013	31.935874189231722
2014	32.63541683513356
2015	36.25020198894022
2016	38.87462615737426
2017	39.43803742083795
2018	41.16873121496445
2019	38.899363981533064
2020	37.626829885286575
2021	42.613382330684104
2022	45.687445330770885
2023	37.91918234568593