Year	% of GDP
1970	2.432620508918759
1971	2.356047857969896
1972	2.2604035443037978
1973	2.2445802488917375
1974	6.011025420864458
1975	3.769208637655977
1976	3.4502403429507402
1977	3.0890533861372544
1978	3.0565384762761805
1979	2.7033435110845843
1980	3.8136859187265526
1981	5.057886242781833
1982	5.21254407721585
1983	4.153653967762241
1984	2.349466079477505
1985	2.2266686866797722
1986	1.7627177737771833
1987	1.313436343475075
1988	2.0396229946887376
1989	4.293330567366887
1990	5.298074419932658
1991	8.13632963600558
1992	8.760474402145555
1993	7.482839123314402
1994	5.829614257983947
1995	4.710245401588307
1996	5.035342931072918
1997	5.136241158053275
1998	2.997750852014568
1999	4.921466664893409
2000	4.038428623937644
2001	0.5970293182520802
2002	3.1661243225047118
2003	2.9209420945676468
2004	3.507872620494129
2005	2.7343873494007807
2006	4.727164848343582
2007	4.686845782874359
2008	3.2808194912517408
2009	0.056692316075743036
2010	4.268646638540306
2011	5.074460321433771
2012	2.8290573817452964
2013	3.49431175959971
2014	3.1412294036534822
2015	3.270944029317345
2016	4.471309585986512
2017	2.9358203805856053
2018	2.3145872121973436
2019	2.506977057480441
2020	1.2027546425582092
2021	5.415570134488049
2022	3.61793052767227