Year	% of GDP
1970	0.3370100574267806
1971	0.266225788509233
1972	0.3114627462020547
1973	0.5436952446559209
1974	0.7837886266266191
1975	0.40618573285942733
1976	0.5654289798764225
1977	0.6326630231030503
1978	0.5823202387468978
1979	0.7978705796342888
1980	0.861237795102627
1981	0.6980702525555951
1982	0.5365508907293183
1983	0.5431453264288871
1984	0.40490088800602886
1985	0.39167156611938453
1986	0.3004689733990906
1987	0.4259081857343852
1988	1.1342629388944052
1989	0.7041917594334526
1990	0.5525608765559977
1991	0.5676370181630963
1992	0.4923367082294151
1993	0.33911907272533326
1994	0.33311570994662654
1995	0.35930749809742063
1996	0.25970203949816095
1997	0.2446850256440488
1998	0.42553016163489665
1999	0.33746494226534135
2000	0.22133058156171362
2001	0.18484400497462314
2002	0.19002281472907445
2003	0.21089239876567162
2004	0.32718924296834867
2005	0.7219933250805309
2006	1.1389088538100511
2007	2.0044372642991313
2008	1.9872983434385663
2009	0.9586391804477763
2010	1.8140945993616544
2011	2.0871534030977976
2012	0.7504021071060724
2013	0.6063996322710331
2014	0.364293747495849
2015	0.20952152230250373
2016	0.19962791253201473
2017	0.25594327536527073
2018	0.22665891956949807
2019	0.2839468922612371
2020	0.19319392948803363
2021	0.6239251451103165