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	0
2001	0
2002	1060160.09523933
2003	1626825.4726005
2004	1847374.87403934
2005	12269237.7173264
2006	67837833.3012022
2007	60031032.247152
2008	79422412.2541066
2009	18613671.4807115
2010	0
2011	64596.0707345399
2012	62219.5484291446
2013	56679.8283273703
2014	51667.8916892266
2015	0
2016	0
2017	21674.6447512905
2018	34103.05081613
2019	25462.4422599388
2020	12920.1842125975
2021	36419.4878835001