Year	% of GDP
1970	38.05654360868665
1971	38.39625041952177
1972	38.35176810276915
1973	37.752592754329825
1974	36.93331467746666
1975	33.838179851743796
1976	32.24139507764607
1977	31.598553311193843
1978	32.33824290802251
1979	31.629957392514456
1980	31.90901391774119
1981	31.953954521788503
1982	31.642528020577075
1983	30.493072941645906
1984	31.86780830847663
1985	32.40292841244882
1986	32.726157422902496
1987	32.79867445873465
1988	33.809954392698884
1989	34.51965411092348
1990	35.12721198029386
1991	33.122340839595225
1992	31.54639756845637
1993	31.53915208235547
1994	32.29252745106456
1995	31.850940106678898
1996	30.911351553382588
1997	30.60917485417726
1998	31.186855186574714
1999	30.825287431416516
2000	32.17278041615631
2001	32.06069206652252
2002	31.55237189117659
2003	31.09035894575478
2004	31.63134040932281
2005	32.6363949166275
2006	34.89214972799181
2007	36.56258576062743
2008	36.89266361577076
2009	34.585342972319566
2010	35.50569194345108
2011	35.835992874456615
2012	35.761114646588524
2013	35.59765278183576
2014	36.01431275994193
2015	35.59429257069583
2016	35.631455880946916
2017	35.11948731765522
2018	36.262321112623106
2019	36.24096822308503
2020	35.983886157933064
2021	38.423576909520314
2022	38.239061261859234
2023	37.013310139027766