Year	% of GDP
1970	0.790603760586441
1971	0.83745331750132
1972	0.797809183783004
1973	1.68084556037637
1974	4.70696881072063
1975	4.95330318145896
1976	4.56845178800803
1977	5.56539862968078
1978	4.80077820713827
1979	9.32952124704058
1980	1.466589166468
1981	0.892090493692171
1982	0.804194720885462
1983	0.926167538724599
1984	0.740027109128275
1985	1.18197226804322
1986	1.13179976599718
1987	1.23212040443626
1988	0.948200256392376
1989	1.44917698367645
1990	2.11977865414499
1991	1.30092119322708
1992	1.26072573627742
1993	1.07963865492736
1994	1.09863009513407
1995	1.19498484546787
1996	1.33907944190112
1997	1.25323503313593
1998	1.08308340601535
1999	1.50420162560646
2000	1.83884365392209
2001	1.8560030372484
2002	2.20000712578415
2003	2.18530023268376
2004	2.449015487971
2005	2.89116676059003
2006	2.74227699834054
2007	2.2305726195064
2008	2.30185926464357
2009	1.83964954460087
2010	2.27972757975705
2011	2.615759800493
2012	2.56305239816052
2013	2.14619455982111
2014	1.9953468853851
2015	1.22522777965692
2016	0.96533124558749
2017	1.10680683630599
2018	1.24123933516406
2019	1.30340484004876
2020	1.12387026995965
2021	1.43561633294011