Year	current US$
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	48200000.762939505
1988	97709999.0844727
1989	191190002.44140598
1990	432190002.441406
1991	577349975.585938
1992	891669982.910156
1993	783190002.441406
1994	705010009.765625
1995	557299987.792969
1996	689989990.234375
1997	537369995.117188
1998	621510009.765625
1999	595299987.792969
2000	473769989.013672
2001	938049987.792969
2002	726950012.207031
2003	799479980.46875
2004	1040359985.35156
2005	1286400024.41406
2006	1483130004.88281
2007	1940510009.76563
2008	2465689941.40625
2009	2597830078.125
2010	1797719970.70313
2011	1154140014.64844
2012	390290008.544922
2013	544530029.296875
2014	184290008.544922
2015	27299995.4223633
2016	2208239990.23438
2017	216330001.831055
2018	191400009.15527302
2019	278829986.57226604
2020	270250000
2021	361889984.13085896
2022	458720001.72175455