Year	% of GDP
1970	0
1971	0
1972	0
1973	0
1974	0.0945389453280389
1975	0
1976	0
1977	1.03487560111522
1978	1.08146437068277
1979	1.58034008339563
1980	1.44537348439404
1981	0.36587923773322
1982	0.179660196739249
1983	0.627780477425671
1984	0.192764463131672
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0
2008	0
2009	0
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0.000142211930544087
2017	0
2018	0
2019	0
2020	0
2021	0