Year	% of GDP
1970	0.027285128859887344
1971	0.7624942381915293
1972	0.20287445648896765
1973	0.6878852740936587
1974	0.7132241607449009
1975	0.5246007130539957
1976	0.9188497993828127
1977	0.662960682491173
1978	0.5178263221698619
1979	1.1330999089711973
1980	1.3086109036340805
1981	1.281392948437646
1982	1.4709611525245057
1983	0.7515099807638614
1984	0.9493433154009344
1985	0.852166910665912
1986	0.9039905033586895
1987	0.8134668702960349
1988	0.8787336365564398
1989	0.646147771954267
1990	0.30037028530252496
1991	0.23958984269468855
1992	0.2710658904095707
1993	0.2962172882119859
1994	0.00013268998673682158
1995	0.1546150433371749
1996	0.16059784304585753
1997	0.139882181600427
1998	0.3569016529924215
1999	0.0806635264295501
2000	0.39152428003344003
2001	0.940709714780277
2002	0.07629688519854051
2003	0.21980721690555427
2004	0.32400649272574245
2005	0.2713186387714162
2006	0.923071092716631
2007	2.0214468324000565
2008	1.9747663811923764
2009	2.091294160199138
2010	3.529814497973465
2011	1.6285977253951132
2012	3.522193612421593
2013	2.989320727739705
2014	3.8111233056096956
2015	1.8971019584792743
2016	3.2172348896000127
2017	2.9615357532021545
2018	3.799501369939484
2019	2.542899895604863
2020	1.4999833575847366
2021	1.9142719630674578
2022	2.9933504159560806