Year	current US$
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	415.945696115309
1979	430.490539783535
1980	608.737494492143
1981	904.196257960695
1982	937.539102476027
1983	5807.57467199277
1984	4643.67364482391
1985	7815.94865607127
1986	1611.45320401595
1987	873.917539217932
1988	1110.66417354743
1989	1436.31226751257
1990	2016.91173702529
1991	1973.9456114418
1992	1791.40813116496
1993	13068.6067945253
1994	14202.1877351399
1995	19442.1634492842
1996	21976.9474802543
1997	8654.13913901571
1998	10054.9420053969
1999	11410.1674942465
2000	17455.0644899777
2001	30132.668728833
2002	19973.910937273
2003	15873.5406869302
2004	682848.936321151
2005	3525577.46858543
2006	14802229.1653154
2007	25339909.0851082
2008	33614603.9369508
2009	34889540.5020893
2010	47036854.6424349
2011	40863944.3117952
2012	50572888.4176939
2013	53878016.2597909
2014	43612259.3732573
2015	38611071.4585723
2016	36788036.9607755
2017	47945476.2515281
2018	104740902.988538
2019	106077741.566294
2020	72679263.0220201
2021	141252701.493747