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	91934.6806107416
2001	85740.3402993413
2002	72750.132866918
2003	68909.7754042782
2004	164185.547644984
2005	179621.600113303
2006	327994.080335072
2007	317370.18231326
2008	717224.726352821
2009	366674.235884786
2010	579540.453439718
2011	762855.415515436
2012	575123.444128508
2013	508029.607401698
2014	456767.786913889
2015	372839.178738994
2016	419353.804917891
2017	610122.770866332
2018	773317.987306693
2019	603926.211352362
2020	499991.136141973
2021	1017001.54153081