Year	% of GDP
1970	21.849473006251298
1971	22.029185648406173
1972	22.34167438493079
1973	23.715263445273617
1974	22.93391564196383
1975	21.373238591376204
1976	22.122392912712144
1977	22.444385568357326
1978	23.671945474099235
1979	24.29399987756243
1980	23.02354957286891
1981	24.0530283609861
1982	21.634174101911753
1983	21.02265163011102
1984	22.68221930925435
1985	21.731334423124014
1986	20.976916105615302
1987	20.86916998191846
1988	21.060670802789797
1989	21.22790140936375
1990	20.339408966372126
1991	19.5566087367042
1992	19.399017864936845
1993	19.363354662649048
1994	20.059086697610894
1995	20.271782091230904
1996	20.676651913496627
1997	21.36836274425286
1998	21.290800667315093
1999	20.97065010310404
2000	20.396297957133722
2001	19.06174312196449
2002	18.126424341954927
2003	17.718368841322494
2004	18.116848447168667
2005	18.441463129512396
2006	18.59416522469616
2007	18.271561184268055
2008	16.964909975535846
2009	15.369167451548174
2010	15.764246218410587
2011	16.11241691357405
2012	17.20758342314077
2013	18.122654338858606
2014	18.56873144294751
2015	18.772713667347066
2016	18.388222463988534
2017	18.61997651867558
2018	18.915314085776615
2019	19.19916552863391
2020	18.62109801305626
2021	18.260805947032775
2022	18.690219011779234