Year	% of GDP
1972	0.7447035161579701
1973	0.7046167807567852
1974	0.5737106384054033
1975	0.673696515895115
1976	0.7100270196516811
1977	1.288294521856897
1978	1.5092797049993303
1979	1.8004917973057473
1980	0.8204970640700067
1981	-0.10351314311034485
1982	1.891303659472063
1983	0.27675238830070936
1984	0.46763321789406515
1985	1.2408877344631384
1986	0.9760053256499779
1987	0.9851206077301373
1988	0.46417648999742395
1989	2.8957172462662726
1990	5.626838029312612
1991	1.1565333912605813
1992	2.5262545766377764
1993	3.550745798129261
1994	6.211340581755335
1995	8.51753087054578
1996	9.765926508514474
1997	12.407612091728286
1998	4.224014937147491
1999	9.63067487393512
2000	7.1280122229814475
2001	22.500901325044723
2002	3.063884893616921
2003	3.815529558083493
2004	11.421515699738912
2005	9.821407992429092
2006	13.498922467554006
2007	22.594153240591403
2008	4.113468464591706
2009	16.502484708914107
2010	14.764809295000855
2011	11.419171733550018
2012	6.9403316773065145
2013	14.721167104866224
2014	16.666737686800694
2015	14.682929812931613
2016	12.379221479563741
2017	19.324705429646986
2018	6.348248421935004
2019	17.98241097073345
2020	11.386080587573733
2021	14.13646094048257
2022	10.478031444782731