Year	current US$
1970	1117572.5237923
1971	1156433.23844675
1972	907267.046244015
1973	801750.566470131
1974	1088250.22588996
1975	1813928.41349497
1976	2529712.33652102
1977	1867036.97339648
1978	1161097.32753244
1979	308527.569070993
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	0
2011	0
2012	12318482.3809371
2013	13482800.0488564
2014	3620653.71640278
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0
2021	0