Year	% of GDP
1971	0.04263443044000063
1972	0.11332068737233714
1973	1.049477771038678
1974	2.0401704625553454
1975	0.6313115904853596
1976	0.7207407342984857
1977	0.6502400341273421
1978	1.2529833930157295
1979	-0.6111865355585099
1980	-1.6474405110333052
1981	-0.6626981618659946
1982	0.7097682939297417
1983	0.5640160551121878
1984	1.2705275921797976
1985	2.456408821955536
1986	3.695207663995706
1987	3.406049492285919
1988	3.8509692894115
1989	4.078200321210773
1990	2.6221547653532897
1991	-1.42133805782855
1992	-1.1848102308499628
1993	-1.0335488608311474
1994	-1.5167749640193535
1995	-1.2449296903798803
1996	-0.6814825615384986
1997	-0.5208362095340779
1998	-0.6983139509693798
1999	-1.429859118720265
2000	-1.7404661031122013
2001	-0.36486375616650785
2002	1.9110326583504926
2003	1.4384691345974054
2004	4.53055764563467
2005	4.674871481839057
2006	5.793110035427745
2007	6.882843440987424
2008	5.693858371002978
2009	5.896203275076538
2010	5.770325618210359
2011	6.187041866657981
2012	7.131858140018009
2013	6.571963996792911
2014	7.184872628090673
2015	8.579541122807436
2016	8.615881441908256
2017	7.847953281053704
2018	7.973145178141931
2019	8.173765036703198
2020	6.567299174598125
2021	7.294129977959024
2022	4.282478006294383
2023	5.8958299874286615