Year	% of GDP
1970	0.5746456053068343
1971	0.48503882461914777
1972	0.5138745389083436
1973	0.6596174603695751
1974	0.4937442711672568
1975	0.5777849207645367
1976	0.5133068971507011
1977	0.456302513188843
1978	0.5087696102305316
1979	0.7018678037018162
1980	0.5588005785688559
1981	0.4933014223525635
1982	0.35082751961299613
1983	0.38874173503901754
1984	0.4715057759704751
1985	0.4308835334534379
1986	0.6752045239722182
1987	0.9254054897481512
1988	1.0506562539250603
1989	1.2472813660040656
1990	1.301639258810633
1991	0.9706627561778325
1992	0.9271045998374694
1993	0.9747191913235289
1994	1.1300976292215081
1995	1.3097301765337055
1996	1.4038469657843742
1997	1.6754408817949646
1998	2.5185996715340058
1999	3.762728104451232
2000	4.191138495810444
2001	2.4355462041684053
2002	1.8816336422143294
2003	1.8333654281645801
2004	2.7131158464166125
2005	2.9523482679852244
2006	4.154306747297352
2007	5.449085212453121
2008	4.031326027647997
2009	2.182023664323836
2010	2.648388158783261
2011	2.949094778026727
2012	2.229294605974957
2013	2.49978794223835
2014	2.175279602984218
2015	2.871626215692533
2016	2.754911594095395
2017	2.5393658379701214
2018	0.7647931620955353
2019	1.6992199951601916
2020	1.1566141583452607
2021	2.4208191997394923
2022	2.0093330974501553