Year	% of GDP
1970	1.3112852812032398
1971	1.225354582928669
1972	1.2802484068318811
1973	1.84874276725917
1974	4.054376321490592
1975	3.469728329500166
1976	3.6399265897486233
1977	3.690619278139886
1978	3.649352847392664
1979	7.639622604806415
1980	8.712567146486506
1981	6.723040954081428
1982	6.387590565272552
1983	7.258461291050269
1984	6.880255563666652
1985	6.4499334813401275
1986	3.3093974284769883
1987	4.861385804907516
1988	4.415818924578959
1989	4.25085140749182
1990	4.605827174836512
1991	2.718742628498558
1992	2.607795343317797
1993	2.0796736601620696
1994	1.7916150644791504
1995	2.062256953292013
1996	2.2379335169590058
1997	1.922285816961998
1998	1.2695191585263257
1999	2.05252497681796
2000	2.9906071499093247
2001	2.417906534036105
2002	2.920053185518172
2003	3.2189989381788826
2004	3.776639140126657
2005	4.861169049124124
2006	5.455667866142175
2007	5.3181472079427685
2008	5.896478942123284
2009	3.347708576130133
2010	4.409829066950389
2011	5.650034622228831
2012	5.121109164423829
2013	4.647312181203208
2014	4.034037804802013
2015	2.254692670589284
2016	2.1956019154850477
2017	2.5572989999487317
2018	3.310471084711686
2019	2.6965455781199528
2020	2.3263681530075413
2021	5.6144339501997385