Year	% of GDP
1970	0.5869669083432479
1971	0.49396620616694387
1972	0.5245246529887055
1973	0.6742773211105869
1974	0.5104080574748785
1975	0.6157433554219035
1976	0.5609130298564141
1977	0.5062686915790202
1978	0.559410521017405
1979	0.7934471541983668
1980	0.6263575649245556
1981	0.5664737479360185
1982	0.41116969560006034
1983	0.45706122937608645
1984	0.5535593774257006
1985	0.4985444108071911
1986	0.770940670642293
1987	1.039240043724313
1988	1.1757815211356935
1989	1.4185821777192775
1990	1.4733982879656828
1991	1.080591635563566
1992	1.0056741314041988
1993	1.0824320960057439
1994	1.2685142500604465
1995	1.4632950759035628
1996	1.5941554036318808
1997	1.9103696875866112
1998	2.9139026064145
1999	4.314806301306076
2000	4.825908586064042
2001	2.862359707377495
2002	2.1906533215495494
2003	2.1086324930924105
2004	3.1488009928193224
2005	3.4912077904973375
2006	4.926375629610009
2007	6.735278172579984
2008	4.975951460202713
2009	2.6864981313385226
2010	3.3095449169803985
2011	3.89865996905457
2012	2.9008139023523087
2013	3.324662877024844
2014	2.7824950026465616
2015	3.7858807607920446
2016	3.542152780694965
2017	3.4166236824661445
2018	0.7680025329438571
2019	2.1949106034964743
2020	1.3747287438757936
2021	3.300634179207111
2022	2.717578562563591