Year	% of GDP
1971	0.034390050656420784
1972	0.028792103977616442
1973	0.027326477493463702
1974	0.1684176278966188
1975	0.6438494769461459
1976	0.6403795181414231
1977	0.6094955441328836
1978	0.43457132053972114
1979	0.3854452582999617
1980	0.588855201800054
1981	0.9696559760465362
1982	1.134880709967648
1983	0.6292453514851646
1984	0.454701159758145
1985	0.5108477534606305
1986	0.2040909070102485
1987	0.0268448385742319
1988	0.08356065726056308
1989	0.14427313823073779
1990	0.16546798372839208
1991	0.12696543292865337
1992	0.07099973600542896
1993	0.01773624917578407
1994	0.00844880558716602
1995	0.05324355993955894
1996	0.022500689278770795
1997	0.018620947403313364
1998	0.03727451075197217
1999	0.017859507193212894
2000	0.035954391826630135
2001	0.19257284042675893
2002	0.07952891338332257
2003	0.06310783135985412
2004	0.6303365995264782
2005	0.531281403405257
2006	0.6058611423147053
2007	0.7694471021725787
2008	2.0536181972987517
2009	0.7788475925976355
2010	1.2635715450601035
2011	1.7329116427624234
2012	0.9206897387849304
2013	0.6270346157613294
2014	0.4921952070200357
2015	0.2680539946858063
2016	0.27515360910191056
2017	0.3681363404751324
2018	0.41030671783643985
2019	0.32117827748238625
2020	0.2598607760759797
2021	0.45482145826444137