Year	% of GDP
1970	1.2707313479055546
1971	1.1831580008071343
1972	1.2064087073226786
1973	1.687095912032798
1974	1.2151564465219118
1975	1.3754292057525204
1976	1.1107782101045427
1977	1.6128401244799362
1978	1.6128801709014555
1979	1.3849578710292478
1980	1.3314891480667475
1981	1.0699804629110514
1982	1.5211978474181302
1983	1.2427871666584895
1984	1.2254176252080937
1985	0.9952226469227764
1986	1.6050925634201239
1987	1.2834031070380052
1988	1.2438580609842655
1989	1.3372835999423696
1990	1.0715546371564357
1991	1.6551591279291888
1992	2.2463663300042946
1993	2.355104422188808
1994	2.8970133438088785
1995	3.884637801247735
1996	3.7994890622316375
1997	3.1731573094811214
1998	3.3684541168108826
1999	1.8747398038665002
2000	1.5591935157562216
2001	1.5530577243298405
2002	1.9117171141827278
2003	2.8785630170972882
2004	1.9749720884340747
2005	1.6347438416499616
2006	1.3818042099905312
2007	1.6171645596713413
2008	1.564065472292084
2009	1.674993636481693
2010	1.3210158737565874
2011	1.4886216570119446
2012	1.4571140441125408
2013	1.5123137793905583
2014	1.6172031162349578
2015	2.4229168946571438
2016	2.760435076896024
2017	2.7108652336035384
2018	1.7819936383031512
2019	1.6371489226083953
2020	1.915217295778441
2021	1.9064526722380908