Year	% of GDP
1960	12.638943334509712
1961	11.953191413874933
1962	11.787338230150404
1963	14.285714285714285
1964	15.38757719864346
1965	16.786842180174418
1966	18.940102106852663
1967	16.209150326797385
1968	16.733933561005898
1969	17.803428809806974
1970	18.571428571428573
1971	17.286376461104393
1972	18.907343073335554
1973	20.881985797836457
1974	22.407085953094604
1975	21.72303135028388
1976	21.572399533942704
1977	24.455796936199363
1978	21.47563596759345
1979	21.348476766769718
1980	22.186401309860766
1981	17.089747879532457
1982	14.787196792033846
1983	12.994474563780129
1984	13.002111795120255
1985	11.94822951858451
1986	16.051899759743023
1987	15.84890838120735
1988	16.103675330358005
1989	17.307448868103737
1990	21.027520942380754
1991	17.9526059616575
1992	18.065989430090276
1993	17.70303110682204
1994	17.519944947999193
1995	19.259044030749294
1996	17.810117299141844
1997	17.956108023015354
1998	18.1716066211
1999	19.004924125361075
2000	20.19503439569268
2001	28.663548285185747
2002	26.726276797161795
2003	26.181099716479324
2004	27.419409708972296
2005	25.454901513816974
2006	25.339833434462662
2007	25.980517603784115
2008	25.12434592086193
2009	24.367826482059904
2010	26.225464334159415
2011	27.067705784877194
2012	25.267092636424987
2013	21.99815539637223
2014	21.74436292456357
2015	19.82990769259779
2016	18.75308929478636
2017	18.495046301475256
2018	18.16932652656355
2019	17.611976152952792
2020	16.34451305469249
2021	17.7121044581955
2022	19.015539563226476
2023	17.19037503316979