Year	% of GDP
1970	2.033043653490692
1971	2.3214452215788786
1972	3.0786492843385176
1973	4.464000868554848
1974	15.13971549811811
1975	11.822646120262359
1976	13.216497913986716
1977	12.85228003683549
1978	11.490881811166505
1979	21.627835371056694
1980	19.882563366285627
1981	15.538899853343006
1982	10.510768351705561
1983	9.908868308251927
1984	9.552716594373258
1985	8.408316567663286
1986	4.30685964854839
1987	6.002635112323854
1988	4.869763761585843
1989	7.144620435609945
1990	9.635101910278893
1991	5.300288053270836
1992	5.13155096650015
1993	5.189457508592502
1994	4.845840566224094
1995	4.894794762883795
1996	5.731399988575681
1997	4.844773464805259
1998	2.8982415707796747
1999	4.15640973096365
2000	6.845849013920396
2001	5.37642790945443
2002	5.524196198952216
2003	6.12980873604979
2004	7.302948041835969
2005	9.325245232132733
2006	9.632443725116136
2007	8.586579157706604
2008	10.574574378054667
2009	5.770380635774344
2010	6.492092900070201
2011	8.605082965511286
2012	8.316022401923032
2013	7.4349170528186725
2014	6.412319168771769
2015	3.04277182037539
2016	2.4803832199163467
2017	3.119270172317754
2018	4.3273337081630325
2019	3.4294306770548597
2020	1.9532392526928382
2021	3.3815313187860276