Year	% of GDP
1970	-0.6513237433440011
1971	-0.40033040837359124
1972	-0.15207579226667178
1973	-0.5350555878474488
1974	-1.5436241631784675
1975	-0.7800252289443002
1976	-1.6446338896890111
1977	-1.172775976908678
1978	-0.3556230285802293
1979	-1.3433792950618297
1980	-3.0923761139432457
1981	-2.4017580742264357
1982	-2.0446308187678675
1983	-1.1607024284071343
1984	-0.689204070078965
1985	-0.5870637014884004
1986	0.3997559553515728
1987	-0.21537543960772254
1988	-0.3462004754758965
1989	-0.6837297351798313
1990	-0.5425064597725644
1991	-0.5357346781530161
1992	-0.2772026634196756
1993	1.1027769459273031
1994	1.254257820870638
1995	1.4453279428140675
1996	1.6945374805307338
1997	2.0753233148601673
1998	1.825870459804868
1999	1.2738445123185826
2000	0.7524070994835981
2001	1.4466231740043298
2002	2.4236284298271045
2003	1.9417695262212007
2004	2.1509198137637
2005	1.5769758636692472
2006	1.2456831318131663
2007	1.4705259069141903
2008	1.1179413400991507
2009	1.6485277480692702
2010	1.5375808319407511
2011	1.614500183087202
2012	2.918340941110465
2013	3.4979745018597797
2014	3.8354159934728003
2015	4.4400786134653245
2016	4.3844883508701145
2017	4.3268937445115725
2018	3.98364120054935
2019	3.4620856784318406
2020	3.570488098720787
2021	3.960470216231684
2022	1.7862590848187665
2023	3.579129685529402