Year	current US$
1970	6157268.5541628
1971	11556278.1562537
1972	16590325.8361522
1973	24337855.9401105
1974	109694070.218833
1975	108484232.712211
1976	108108652.053637
1977	110099785.741412
1978	117039205.793569
1979	242745900.220781
1980	254150480.600227
1981	163603384.000589
1982	91333372.8507824
1983	121778276.771154
1984	118466534.695768
1985	111455255.699779
1986	55181985.4081418
1987	69777309.5067225
1988	58941868.0494021
1989	88494895.9236626
1990	131099724.741159
1991	73727412.6072283
1992	66507858.1125541
1993	71772023.3195917
1994	60186495.7691977
1995	76265620.284221
1996	90620413.9491167
1997	79720611.6353379
1998	18959006.0571218
1999	51390381.8652859
2000	131288514.386484
2001	138129846.923105
2002	128626115.698658
2003	147302569.338673
2004	186130467.086219
2005	202812638.109119
2006	291973092.979983
2007	305386134.733032
2008	492660210.055004
2009	311721868.98694
2010	321375755.315674
2011	444893341.845876
2012	497361699.064302
2013	443461921.223885
2014	407729750.711797
2015	188947597.259703
2016	122282616.540213
2017	172386124.68608
2018	250839149.072039
2019	193652264.696179
2020	84799640.3341273
2021	259625075.887807