Year	% of GDP
1970	20.33169792480949
1971	20.087324801839134
1972	20.011546153954278
1973	21.64870922987171
1974	25.988208286400038
1975	23.275745759775283
1976	25.018018548081805
1977	24.979139224030895
1978	23.6938660938662
1979	25.211246901123936
1980	26.80809160941507
1981	27.184162688685674
1982	27.027418040971046
1983	26.70044467873922
1984	28.01460399601716
1985	28.105800312110574
1986	24.963582254396858
1987	24.754399226570158
1988	25.12782763216454
1989	26.592447180411327
1990	25.828374168069608
1991	24.877021995779238
1992	26.45039849724759
1993	25.00513928758363
1994	25.83323117796663
1995	26.968579529971553
1996	27.124290977663478
1997	28.680497764812017
1998	29.21426585593342
1999	29.866892950685482
2000	33.285531415458074
2001	32.94382160485965
2002	31.694864914596526
2003	31.37030586199504
2004	32.46173786503695
2005	33.910564368051624
2006	35.94176000808919
2007	36.41315281076579
2008	37.384288975310895
2009	33.137285672538795
2010	36.26131551595543
2011	38.42212353069359
2012	38.21970106778884
2013	37.96184997162129
2014	38.05654948053597
2015	38.59266268755028
2016	38.92127910598898
2017	40.42003945067114
2018	41.56306242473627
2019	41.93618836170239
2020	39.41001907976811
2021	42.065293072492615
2022	47.492167502550615
2023	44.06397860096328