Year	% of GDP
1970	1.6896668044429484
1971	0.87008700870087
1972	1.2076079299587401
1973	1.023541453428864
1974	0.9160200717776943
1975	0.777950655701267
1976	2.83436669619132
1977	2.6945128403566523
1978	2.779655417793174
1979	2.9333673365097837
1980	2.7080591912797836
1981	2.4188961408752463
1982	2.298183225681593
1983	2.1148298375376875
1984	1.7681559427289977
1985	4.79722793565069
1986	3.6817259190221345
1987	4.686762097399632
1988	5.373722881013357
1989	4.494067416790508
1990	4.450302898495978
1991	3.3538659347132525
1992	2.986545303272324
1993	5.795409512624163
1994	5.445643241827237
1995	5.04406620560925
1996	5.277491064670372
1997	5.7060214844697175
1998	6.486646448151877
1999	7.368347072749707
2000	7.5652785158079165
2001	7.7408548085653255
2002	8.085876694427672
2003	10.864746828594395
2004	11.204894696709394
2005	7.600294564578483
2006	8.0618101855444
2007	7.726520125663681
2008	7.492321456742938
2009	7.075473812146325
2010	7.216833430941308
2011	7.307800353092923
2012	7.023718095080516
2013	7.155943648671028
2014	7.160469148131517
2015	7.301640755672927
2016	7.27617148276281
2017	7.722438591044528
2018	7.968755666842299
2019	8.34324880149665
2020	10.567108021235132
2021	11.39899138113443
2022	9.052614275905713
2023	8.645940392842821