Year	% of GDP
1960	14.536222167135126
1961	13.494939490567429
1962	13.422525358516966
1963	15.932847640164713
1964	18.089447932372252
1965	19.610937329948726
1966	19.13424893938305
1967	19.511523907808737
1968	18.41664079478423
1969	17.430337963759936
1970	17.778361344537817
1971	18.697097944377266
1972	18.53614429162899
1973	20.20473220439311
1974	25.665033233118244
1975	23.533283962807538
1976	27.583440882255932
1977	26.256729267157038
1978	27.26254481393784
1979	25.85112781122685
1980	24.91908563595517
1981	23.60150948818439
1982	18.687621384224666
1983	14.552484439669197
1984	15.151003007909155
1985	12.984016073346059
1986	14.592119493672689
1987	22.29405504588233
1988	21.93623865474535
1989	22.474097282403733
1990	24.841964527965068
1991	21.56765026152023
1992	27.29625963722037
1993	26.075897045764773
1994	24.850947749202952
1995	25.430386311502257
1996	22.582835658159134
1997	23.59584313394383
1998	26.252133342155386
1999	27.355582729068438
2000	28.950553509260995
2001	42.00548489176183
2002	40.37853472730264
2003	40.82123946976313
2004	42.795462649214876
2005	41.64879809438675
2006	42.572090305198984
2007	43.02084670639216
2008	40.05438460044841
2009	33.67286049180741
2010	36.89972824046276
2011	37.979345257168504
2012	36.69232669877919
2013	34.68706535607495
2014	33.338916356693666
2015	30.063545629884832
2016	27.619648224103145
2017	27.574374099886846
2018	28.842355544831417
2019	27.904766596228686
2020	24.798514948313205
2021	31.779427733195543
2022	35.65441757525752
2023	32.93826566396862