Year	current US$
1970	0
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	699981.250452313
1999	13730.8182068466
2000	0
2001	22390.7358625877
2002	50498.9140737064
2003	18456.2664764744
2004	17405.5686541369
2005	27932.3395156057
2006	93285.5555670639
2007	83408.3783594741
2008	110709.0491503
2009	134958.373946214
2010	181845.831341182
2011	313824.209231353
2012	295484.892919389
2013	199129.362967466
2014	162647.702360798
2015	0
2016	0
2017	0
2018	0
2019	0
2020	0
2021	0