Year	% of GDP
1970	0.22936901844987537
1971	0.00937567679313264
1972	0.1805626177455051
1973	-0.06266224145083861
1974	0.04494790129622483
1975	0.22260597393486417
1976	0.06242770140690926
1977	0.10064222543515443
1978	0.1811928532549745
1979	0.29588069717029
1980	0.2690107262105382
1981	0.38463493730567916
1982	0.20774962800195895
1983	0.10266673581745833
1984	0.1781923494967002
1985	0.42186413927151334
1986	0.3314527089220202
1987	0.3879211730500017
1988	0.4847368389161373
1989	0.5242572003297881
1990	0.6129976619139379
1991	0.5663837372787336
1992	0.6883136241401347
1993	0.672760011900901
1994	0.8051189410601272
1995	1.1917519400405643
1996	1.456054494627557
1997	1.1472285802291162
1998	0.8136100455024841
1999	0.8447950066346105
2000	0.3095950263170444
2001	0.38910658649849
2002	0.8435173000732367
2003	0.4752077118056646
2004	0.8455857016161707
2005	1.5157508311646057
2006	2.6397500624544334
2007	3.0357193381768544
2008	2.6893665612459547
2009	1.248013055279509
2010	1.0279110808042324
2011	0.5750551458399442
2012	0.34345304866094467
2013	0.5153538493322452
2014	0.6953081168342017
2015	0.5577343560321386
2016	0.8213499980641741
2017	0.7358370496584252
2018	0.487745750658143
2019	0.6961464804114654
2020	0.6846952898743467
2021	0.6160394390738271
2022	0.37754681452942396