Year	% of GDP
1970	0.8263484612904347
1971	0.8022906592849129
1972	0.38637950517988734
1973	0.5899765790479761
1974	0.6439424766797158
1975	0.7057631410303861
1976	0.34644005051990534
1977	0.2873380939221316
1978	0.44251948479014275
1979	0.3517236158684297
1980	0.38742731529892926
1981	0.5344333758090816
1982	0.458475674938821
1983	0.42915493686930517
1984	0.414063670569024
1985	0.4840421595083736
1986	0.49008123571330886
1987	0.4731877894093583
1988	0.7224790437921924
1989	0.7450570827374164
1990	0.6982371199970474
1991	1.0419863289359759
1992	1.1533914933482954
1993	1.534907786454996
1994	1.9050061834096477
1995	1.933703495844216
1996	2.241301256445691
1997	2.793314388941252
1998	2.8443106182056326
1999	3.1784488646777573
2000	2.6743824938697722
2001	2.815467087228604
2002	2.495222384633413
2003	2.403844606369048
2004	2.8057930352931404
2005	3.1428842811284956
2006	3.5028915523899307
2007	3.8967791355458297
2008	3.6868783864262706
2009	2.5739485696813693
2010	3.1078190498372806
2011	3.099170636613881
2012	2.6897039856422325
2013	2.7047288221519694
2014	2.386852804551948
2015	2.3660444336685917
2016	2.1280122857923693
2017	1.846665930824012
2018	1.9944443224823225
2019	1.8528294903766294
2020	1.8020332059331046
2021	2.2419485312087652
2022	1.5460596400026072