Year	current US$
1976	23600000.38
1977	24799999.24
1978	11500000
1979	43400001.53
1980	66900001.529999994
1981	66199996.949999996
1982	125000000
1983	86000000
1984	122000000
1985	114000000
1986	167000000
1987	147000000
1988	188000000
1989	175000000
1990	2000000
1991	3000000
1992	3000000
1993	3010000
1994	5000000
1995	4000000
1996	9000000
1997	4400000
1998	5010000
1999	5000000
2000	6000000
2001	6932673.063
2002	7281253.06739
2003	6504694.17284
2004	6500000
2005	54020037
2006	62455627.0952381
2007	83155618.156381
2008	65597443.5777683
2009	95347865.8516625
2010	135971152.489921
2011	148375073.5353
2012	154049108.501747
2013	167268211.104159
2014	195915063.632134
2015	291533662.200659
2016	302374307.716292
2017	371469504.772919
2018	467445307.493583
2019	654668980.287942
2020	518019671.491921
2021	603966053.491175
2022	636527720.95095