Year	current US$
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	13999999.8807907
1988	16809999.8831749
1989	68410000.0783801
1990	125820000.259206
1991	120299999.926239
1992	131879999.443889
1993	73929999.1820008
1994	106510002.34298399
1995	78950000.1277775
1996	213369999.91536102
1997	187570000.15675998
1998	160930000.925437
1999	157760002.71737602
2000	91489999.8679757
2001	88119999.0902096
2002	163449999.447912
2003	157840001.61848998
2004	180569999.49552098
2005	563800007.1272249
2006	283419993.713498
2007	541069997.8414919
2008	860429993.0371339
2009	1148920010.74925
2010	932480004.785582
2011	446479998.23093396
2012	264429997.714236
2013	375240000.611171
2014	122040001.129732
2015	34540000.9416044
2016	59310000.9225309
2017	137950001.07400098
2018	82590000.1972914
2019	114509998.584166
2020	109620002.103969
2021	207029998.30246
2022	154119999.96192756