Year	% of GDP
1960	10.71400507802094
1961	10.614853981590224
1962	10.064569841964632
1963	10.351246253690185
1964	10.1824249744577
1965	9.942903030105848
1966	10.208308615794778
1967	10.238664974266992
1968	10.244471483764263
1969	9.912765536954543
1970	10.393790854928213
1971	10.650295575389828
1972	10.502273581274833
1973	11.537529808146946
1974	14.608806648953255
1975	16.039599055799016
1976	15.610669356591119
1977	16.30434564532455
1978	16.696998904662617
1979	16.720426086678536
1980	18.640545600794912
1981	18.31731486147058
1982	17.563733768734206
1983	16.402840310299837
1984	16.001139643058657
1985	15.773028462279354
1986	15.260627536023149
1987	15.997515787483172
1988	17.873896118634825
1989	19.145947998302745
1990	18.427651489936355
1991	18.5921409964807
1992	24.522000029166648
1993	22.515634995432126
1994	21.64786104072906
1995	22.379251036041616
1996	21.886260859301
1997	22.294945897925718
1998	21.585057411941147
1999	22.66766510751255
2000	24.31014360653007
2001	24.24670266140596
2002	25.252304390460694
2003	26.644998488897293
2004	28.698362622198363
2005	28.647567239600548
2006	28.64672516605633
2007	28.552629412205533
2008	29.260796860955217
2009	25.165811886914742
2010	26.229421486995886
2011	27.169639839603448
2012	27.036144697704867
2013	26.59343105555833
2014	25.997853185181068
2015	23.906287228295767
2016	23.049971302644188
2017	23.838426401622232
2018	25.032014553180275
2019	23.971222138008237
2020	22.150698818555124
2021	24.414550195944553
2022	25.892294466012622
2023	24.778112892918973