Year	% of GDP
1970	43.281909041250174
1971	41.428355116054156
1972	40.76994255541459
1973	40.94527680145206
1974	39.224808874739935
1975	35.468702887357864
1976	35.39282485231956
1977	35.2591356348139
1978	35.47443190697895
1979	34.508196730846485
1980	34.23539661483178
1981	34.611069497432595
1982	33.39076895358144
1983	32.96181704396409
1984	33.718821911534505
1985	34.35379395661456
1986	34.7614911828695
1987	34.775727148762435
1988	35.97131964722997
1989	36.18835317315553
1990	36.21605779033855
1991	36.684588240297636
1992	35.55573098445497
1993	33.87283353861999
1994	32.52185632826994
1995	32.17644865403215
1996	32.40455215184196
1997	32.094246405176094
1998	31.335268353583817
1999	29.68586166338964
2000	29.78203746346077
2001	28.348950322756966
2002	27.162628339339616
2003	27.266404895255175
2004	27.546383090772984
2005	27.454162845182378
2006	27.37590770188624
2007	27.530398305746328
2008	26.211171227974184
2009	23.05214143820726
2010	23.928838333426306
2011	22.894532483638017
2012	22.363548047483718
2013	22.0071688533491
2014	22.44223811754184
2015	24.611459200497816
2016	25.641252204864166
2017	25.974509694018693
2018	25.661655738703317
2019	25.500312953253456
2020	24.97757536843642
2021	25.198517331877834
2022	22.82733507935626