Year	current US$
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
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	1242261.11009299
2011	14030328.21168
2012	2219931.68592842
2013	5860462.76289457
2014	37831212.0097974
2015	501086.571028347
2016	402163.179475087
2017	787500.780762588
2018	1143986.3245139
2019	804303.121961452
2020	304637.643438715
2021	954520.825792162