Year	% of GDP
1970	1.61782799468709
1971	1.7108701476026
1972	2.23106568694275
1973	3.21621019356535
1974	1.79827942492005
1975	2.11730335982498
1976	1.75343804069489
1977	1.83357711623059
1978	1.39571565266133
1979	1.66126171274782
1980	1.6104852088905
1981	0.826003233176963
1982	0.905158693810842
1983	0.972724403290391
1984	0.667670223817577
1985	0.64716126193493
1986	0.888386987312443
1987	0.976365825030787
1988	0.783436596612812
1989	0.687746373266189
1990	0.581909508531414
1991	0.534423483294861
1992	0.51222024760977
1993	0.44492647092665
1994	0.4486828733456
1995	0.528630338620144
1996	0.480630495752567
1997	0.39378673321738
1998	0.437634560585824
1999	0.257995266828329
2000	0.266294389337994
2001	0.30038605107745
2002	0.298292595569984
2003	0.404284633164113
2004	0.342061736291048
2005	0.264349018304629
2006	0.288848766107275
2007	0.325748577590045
2008	0.435708390016916
2009	0.400630135612476
2010	0.338700074143757
2011	0.363036895530963
2012	0.297488355159258
2013	0.269234847110908
2014	0.34087014925573
2015	0.247625799940941
2016	0.251975427702235
2017	0.296677829690723
2018	0.198451064762095
2019	0.168695263776435
2020	0.190645713845517
2021	0.164463350386355