Year	current US$
1977	6500000
1978	7011111.11111111
1979	10281481.4814815
1980	17085185.1851852
1981	19740740.7407407
1982	21585185.1851852
1983	18281481.4814815
1984	30633333.3333333
1985	38400000
1986	78414814.81481478
1987	78203703.70370367
1988	75644444.44444443
1989	87866666.6666667
1990	103411111.1111116
1991	106611111.1111114
1992	120707407.40740722
1993	123562962.9629626
1994	127481481.48148125
1995	140299999.9999998
1996	152637037.0370371
1997	160025925.92592558
1998	165614814.81481463
1999	170246877.77777764
2000	259497517.01834366
2001	272385595.4052392
2002	288259335.7417593
2003	313389776.8151971
2004	332813629.8110826
2005	380094433.3873813
2006	415266958.9854331
2007	439360109.0902003
2008	475790452.5061145
2009	455017469.0795366
2010	403982569.3006923
2011	399093647.01102257
2012	389430578.3495077
2013	390887846.5264148
2014	392317705.1061819
2015	427077807.2955143
2016	480429451.1771481
2017	476894409.0551369
2018	510175978.8612371
2019	554684552.088981
2020	309990785.027925
2021	347541832.057049
2022	509017396.666667
2023	554691199.2592596