Year	current US$
1970	42117.6993172324
1971	6995.03292370426
1972	44097.7416118909
1973	54896.1207112416
1974	70674.7099001806
1975	10018.8804092241
1976	40091.8259622595
1977	77728.4955134845
1978	74565.801388702
1979	171297.315748884
1980	1961809.70935438
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	16817960.665562
1990	6546949.91286184
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	5647139.62122387
2006	5643279.54760889
2007	10821714.7834614
2008	14471339.1905634
2009	12665723.7190114
2010	0
2011	2341142.89033135
2012	7075036.69459269
2013	1570437.38611063
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0
2021	0