Year	current US$
1970	21777019.5454545
1971	27762688.75
1972	34656836.3924768
1973	47684109.9522911
1974	62498197.1985994
1975	57431794.3396225
1976	68047063.2925291
1977	90383954.6940214
1978	102413171.222013
1979	116262327.906977
1980	137623885.401034
1981	141186728.717366
1982	128837097.785694
1983	110273047.15652
1984	113523093.662147
1985	118947473.736198
1986	160130435.755957
1987	223898131.488319
1988	247094499.260706
1989	227178487.894842
1990	259492906.001325
1991	303994253.405763
1992	312776550.575668
1993	294833835.203067
1994	275798875.809929
1995	315377802.670203
1996	345857056.186466
1997	370079486.663265
1998	536702794.733504
1999	497540311.128868
2000	497840208.655744
2001	482239185.569148
2002	616007180.805069
2003	783477646.099807
2004	905508726.003646
2005	1122868931.46406
2006	1125491666.35737
2007	1389587822.96714
2008	1176533552.0366
2009	880203058.540554
2010	896317315.991882
2011	982838857.576991
2012	1053984747.41902
2013	1137786226.9088
2014	1281719745.06511
2015	1234479272.21212
2016	1475424000.637
2017	1789560106.68889
2018	1864629356.25367
2019	1766370350.81122
2020	1511093939.04733
2021	1747944210.11073