Year	current US$
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	1288024.85012666
1977	688645.182048442
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	886575.693670067
2007	2219848.81435222
2008	19264017.9785203
2009	28235538.3241702
2010	9888638.13857723
2011	24103229.3153663
2012	17795339.0690403
2013	9782308.12351535
2014	7285247.57672577
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0
2021	0