Year	% of GDP
1970	4.94082793905462
1971	4.35712721977784
1972	3.38088443587249
1973	3.37301294359561
1974	3.95897674588094
1975	3.26768084234605
1976	2.93978162187881
1977	3.53026773050931
1978	3.43616055450479
1979	3.15466056555158
1980	2.4859978670014
1981	2.45242005866496
1982	3.48259508899918
1983	1.10978766400085
1984	0.651503625684287
1985	0.427695919290364
1986	0.408686931478145
1987	0.51468349868742
1988	0.412432388085088
1989	0.426111932553284
1990	0.758980650078628
1991	0.7545789249722
1992	1.16755024661594
1993	1.25091936869488
1994	1.18848565185335
1995	1.22519462633385
1996	0.942847807917707
1997	0.993751372688353
1998	0.778424833674881
1999	0.619396171409139
2000	0.349449568493596
2001	0.383295015006936
2002	0.396885022338016
2003	0.518316847636601
2004	0.415056574952732
2005	0.353534370526786
2006	0.474483984535321
2007	0.403575652806683
2008	0.399712731958641
2009	0.337463725935536
2010	0.665741356287765
2011	0.530247287448995
2012	0.493447395435744
2013	0.586507266755589
2014	0.699288591917661
2015	0.574767533630933
2016	0.790216838420377
2017	0.657342723836906
2018	0.44034486815939
2019	0.443318678876138
2020	0.577844130610775
2021	0.327641965983974