Year	% of GDP
1960	11.998986117127203
1961	12.172902447137245
1962	10.90930545137402
1963	10.979658337399197
1964	10.750406893957452
1965	10.66346340841878
1966	11.273503023913317
1967	13.401338049469278
1968	14.891223866625495
1969	14.235752690332484
1970	15.747473377670095
1971	18.61055614079698
1972	19.879288796216628
1973	23.5296370848533
1974	14.64526895909338
1975	18.513902290782404
1976	18.923427901376453
1977	19.78252366083447
1978	21.923014987177332
1979	20.157045577081515
1980	18.85579783922547
1981	19.052484202978377
1982	20.23715004292104
1983	15.618171001946369
1984	15.990000951231181
1985	16.786757781429348
1986	19.301692195293818
1987	21.788199470153234
1988	20.60045394511419
1989	20.615715595530737
1990	18.306591010895307
1991	18.30398996091941
1992	17.616252988425725
1993	18.3634923056637
1994	17.82089329581172
1995	17.332777301587328
1996	16.753477661818263
1997	17.06703061947056
1998	18.89615547191842
1999	16.657438459520918
2000	15.010879495011176
2001	15.297019010851143
2002	16.71900297022307
2003	15.43656674290707
2004	15.769959818379611
2005	16.295274475196646
2006	16.577333509999242
2007	16.466314835534913
2008	17.436339535865542
2009	18.141151495221447
2010	19.712771852182076
2011	20.94101777809333
2012	22.13959237817936
2013	23.9253464733797
2014	23.483889266547138
2015	22.54150461212878
2016	20.71483378358952
2017	21.461228616145696
2018	20.988421901581074
2019	20.654928919224183
2020	17.995442613582497
2021	19.074923194794597
2022	20.128399720862042
2023	19.65290689221927