Year	current US$
1970	3960000.0139325853
1971	4359999.975189563
1972	18330000.350251842
1973	14969999.663531784
1974	8990000.165998938
1975	12619999.967515472
1976	18969999.887049187
1977	28159999.72447749
1978	29000000.137835756
1979	52380000.330507725
1980	116519997.81280756
1981	127950001.5601517
1982	101969998.6297638
1983	115669998.67372207
1984	135619999.02501705
1985	176959997.87375328
1986	152730001.9469112
1987	126000002.38418576
1988	144869999.25971034
1989	121399998.1340022
1990	129129999.27997589
1991	232460000.431165
1992	231859995.89413407
1993	259199997.0823526
1994	409880005.1882863
1995	308930001.5047193
1996	137139998.78987664
1997	127410000.75265771
1998	108559999.87944964
1999	122280000.47430396
2000	159709999.24838546
2001	198159998.2082844
2002	251369997.80684713
2003	209810000.4997104
2004	181040000.47780576
2005	50320000.27224423
2006	25309999.730437998
2007	39389999.67277048
2008	47710000.06422402
2009	62879998.89627096
2010	49200000.366196044
2011	67730001.15156169
2012	133523901.55568713
2013	101165153.36651352
2014	59599.9993383884
2015	88245184.97567628
2016	104109129.81629375
2017	162777519.4346906
2018	94743010.85621123
2019	172720508.3221197
2020	157065364.50982094
2021	321889390.23017883
2022	171259200.84118843