Year	% of GDP
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0.000437662941625484
1997	0.000660970998005587
1998	0.0135670379143444
1999	0.0187911013694576
2000	0.0236592233139777
2001	0.00954127696557157
2002	0.0182154367906796
2003	0.0357194563606147
2004	0.0620949478753675
2005	0
2006	0
2007	0
2008	0
2009	0.0480656681741952
2010	0.0653843256716674
2011	0.140996354046386
2012	0.152385822639332
2013	0.0832767345132817
2014	0.0714201888989479
2015	0.0300245179063201
2016	0.00926058332457286
2017	0.0077840509805903
2018	0
2019	0.233373966853015
2020	0.414631791548971
2021	3.57863766648832