Year	current US$
1970	21900000.15683472
1971	13190000.245347612
1972	-3289999.831467874
1973	21960000.222548865
1974	6529999.895021323
1975	15789999.909698967
1976	35000000.64820056
1977	15240000.054240232
1978	2709999.8146295594
1979	-1190000.0385940021
1980	3039999.838918451
1981	9500000.014901161
1982	30710000.64164401
1983	50149999.66695905
1984	67700000.37550929
1985	69439999.41647059
1986	103290000.52809714
1987	161950003.7357212
1988	263199997.07676455
1989	131979999.5701761
1990	242950004.04864553
1991	329970000.95248204
1992	550439998.9992372
1993	332170004.04000247
1994	724269981.8909166
1995	142310003.5414099
1996	134370001.617819
1997	48710000.25048858
1998	19620000.18358226
1999	10490000.195801266
2000	8489999.94993207
2001	17599999.919533715
2002	28329999.86410142
2003	68920000.5233288
2004	135569999.93324274
2005	1019850022.435188
2006	571419991.0610912
2007	644329995.7662818
2008	957019987.8215792
2009	102630000.50187112
2010	65550001.323223144
2011	77419999.78572124
2012	43959999.35641882
2013	62230000.44375667
2014	92740000.3820658
2015	146589998.9604949
2016	98179998.84486197
2017	312919994.2648407
2018	149880001.15752238
2019	157800001.56164172
2020	230469999.5815754
2021	200899998.99268138
2022	256899998.8324942