Year	% of GDP
1970	23.583293236120547
1971	23.654748603351955
1972	23.221637229259116
1973	24.80768888210296
1974	26.328167560640942
1975	25.605369987371198
1976	25.26540208574739
1977	23.97900819541693
1978	23.5851475482836
1979	23.72069775631594
1980	22.884248674397462
1981	20.737629373618002
1982	20.740292523421548
1983	20.57480719873932
1984	21.794248960933402
1985	21.808222929251333
1986	21.63155581985372
1987	22.476681543539527
1988	24.420271619849473
1989	25.551288763521335
1990	23.621768211371947
1991	20.782664831179414
1992	19.4053346623622
1993	18.537317975397535
1994	18.96472699799784
1995	18.08791505496892
1996	18.61365966551391
1997	17.1717161122503
1998	17.545100105057482
1999	17.49373111666641
2000	17.809370321380293
2001	17.742848791808992
2002	17.718238197675248
2003	17.51077217972335
2004	17.477735765746765
2005	17.59107602579162
2006	17.82827617221838
2007	18.147046846605384
2008	17.648845381526105
2009	16.145898571928498
2010	16.057288755794804
2011	15.711630648566393
2012	15.75635388614793
2013	15.967790919414988
2014	16.572331805291128
2015	17.37445935220885
2016	17.904897710184294
2017	18.248032876154515
2018	17.995784982047144
2019	18.19325750552504
2020	17.46376921790173
2021	17.68095586886443
2022	18.333259509948398
2023	18.26855305140768