Year	current US$
1970	3677499.99816125
1971	4447611.01312731
1972	5050386.46172116
1973	5003581.59497202
1974	5363381.05612096
1975	5752611.47139629
1976	10886666.8069178
1977	12691851.908562
1978	12313333.3378938
1979	12219469.6222064
1980	12908888.89367
1981	16097407.4133694
1982	9232512.55944922
1983	14141759.0273227
1984	14234419.0114749
1985	20812465.6719625
1986	20565185.1851852
1987	22740000
1988	16923333.3333333
1989	15442222.2222222
1990	17578888.8888889
1991	17472962.962963
1992	25880000
1993	26900000
1994	31231150.2285391
1995	36734880.7839127
1996	35728931.7143876
1997	42666395.4492466
1998	46840916.0662808
1999	50839905.6834356
2000	57660000
2001	63941398.7402541
2002	87842777.412338
2003	83225917.7043554
2004	121728059.742647
2005	94252920.2097209
2006	99961392.6337931
2007	110569734.763708
2008	105341634.311796
2009	129078999.922631
2010	119154979.881368
2011	120710917.736335
2012	119485006.792475
2013	150571015.878707
2014	169949409.726941
2015	197973503.320903
2016	207689282.825893
2017	199125887.285472
2018	233815853.807382
2019	236325345.085472
2020	293320432.166449
2021	348259248.620045
2022	371767322.523093
2023	404129916.314621