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	0
2003	0
2004	0
2005	239011.124363501
2006	469465.974402783
2007	759886.484141165
2008	871815.721779436
2009	1212053.02665098
2010	5420793.24781649
2011	13586706.8778316
2012	14331235.9881796
2013	17438493.8487209
2014	20357149.3255553
2015	5861031.76318257
2016	4654205.30032414
2017	2889952.63350539
2018	4547073.44215067
2019	3394992.30132517
2020	1722691.22834633
2021	4855931.71780001