Year	% of GDP
1970	0.003119345734465
1971	0.00827984563331017
1972	0.00987085147451372
1973	0.0125932623508712
1974	0.0636311442347421
1975	0.049587458458777
1976	0.0488229037244032
1977	0.043999724735129
1978	0.0339752739440099
1979	0.0654284851480787
1980	0.0742475623624776
1981	0.0682735897626839
1982	0.0422334668266535
1983	0.05339348179652
1984	0.057063416709362
1985	0.0587343665748451
1986	0.0159854011950339
1987	0.0191694523183211
1988	0.0143130278652513
1989	0.0221132214990713
1990	0.022824397451738
1991	0.00981743806321872
1992	0.00896910677422249
1993	0.00831356998485869
1994	0.00668466618014011
1995	0.00633933907972327
1996	0.0090419036366161
1997	0.00778008068542512
1998	0.00249770506951134
1999	0.00713206799652999
2000	0.0201562303638046
2001	0.0153289209077331
2002	0.016056222546191
2003	0.0165037382126426
2004	0.0185417711460884
2005	0.027268431145628
2006	0.0291731982459974
2007	0.028013355499561
2008	0.034054769495246
2009	0.0184514937131976
2010	0.0190328024560215
2011	0.0301021983000363
2012	0.030322053441343
2013	0.0270022581641135
2014	0.0223645319543507
2015	0.0109585492863493
2016	0.00795427640685235
2017	0.0108326903342219
2018	0.0150774778092678
2019	0.0127922924108005
2020	0.00673003142464202
2021	0.0140349033815617