Year	% of GDP
1970	2.8350128969020583
1971	2.6052590100739863
1972	2.4954856628052586
1973	3.5945779671414035
1974	9.399427738449468
1975	7.216831075011847
1976	7.297410077523026
1977	6.226552701581942
1978	5.8688155555368295
1979	12.264301136757675
1980	11.867953689237735
1981	8.753746981836963
1982	7.032863927147394
1983	8.259479507379515
1984	7.920772612126466
1985	7.385725591730424
1986	3.8451412731365973
1987	5.7284474212704755
1988	5.04471390291405
1989	5.094070129068472
1990	5.7613384982127736
1991	3.3740810461096427
1992	3.2166633179000277
1993	2.612611393625124
1994	2.3285414189602722
1995	2.7160706849674616
1996	3.0248542515358667
1997	2.5882401576422622
1998	1.586673935323068
1999	2.5663896613431767
2000	3.845861178266421
2001	3.076180583197794
2002	3.5770603998310255
2003	3.8984387384544625
2004	4.809700571988601
2005	6.134104177211282
2006	7.0558411735546045
2007	6.711360059738881
2008	7.282480419161083
2009	4.040608803631499
2010	5.198284038081212
2011	6.777405113244246
2012	6.025288918470309
2013	5.44689361300168
2014	4.650804296807034
2015	2.285840622274193
2016	2.1780812306110167
2017	2.617218735414709
2018	3.347636966263393
2019	2.617069028211285
2020	2.44097043990864
2021	6.1393259216806495