Year	% of GDP
1970	0.19121890775585132
1971	3.050494847161572
1972	2.873535557432432
1973	1.8620053357496094
1974	1.2526616229408178
1975	0.08682084033613445
1976	0.8022046046437307
1977	-0.40552352265165875
1978	1.224888218631697
1979	5.970114779006805
1980	0.11614252980056154
1981	0.9187270069731354
1982	0.124970752040989
1983	-0.18739875933970893
1984	-0.9586058212712398
1985	-0.22150713920018203
1986	-1.0719269049471065
1987	0.6913121373177514
1988	0.4415998054690846
1989	4.826769823195944
1990	4.453082956133489
1991	1.3429356128142673
1992	0.8852966758154035
1993	1.4226011627837232
1994	1.3016001865294125
1995	0.9833651910137045
1996	1.2561445978009302
1997	1.4517162767366025
1998	2.820470737445593
1999	6.073222103752522
2000	5.558721280465508
2001	5.161398103850956
2002	7.406500313830899
2003	3.751800607099636
2004	5.772562827420283
2005	5.2204168812070355
2006	7.798797902864534
2007	6.102573650997243
2008	4.532839042404581
2009	2.7202391127117624
2010	2.406596896448532
2011	2.5592182698275425
2012	2.910481969148625
2013	4.968003251800485
2014	1.871883576504408
2015	5.222556473309219
2016	4.703702367904544
2017	4.27524164277035
2018	4.896535017621907
2019	3.9194379121789047
2020	10.461275573721718
2021	12.502620124813706
2022	10.642638147756442