Year	current US$
1970	38379999.898374066
1971	52909999.47860835
1972	93720000.85003668
1973	126229999.96319416
1974	171849999.42407012
1975	215220000.85189942
1976	181009999.1280587
1977	179629998.13072377
1978	272909999.6704608
1979	255060000.06943935
1980	251830000.67807737
1981	260439999.1501123
1982	342850001.79708016
1983	338400002.6602298
1984	401189999.0122766
1985	393790002.8396397
1986	317119997.3914773
1987	449519996.56110984
1988	496070004.5023116
1989	448469997.64814985
1990	452350004.5482071
1991	500770004.48666495
1992	493800001.8000605
1993	341249997.1538781
1994	307189998.5466153
1995	315420001.3019146
1996	297609997.98588467
1997	315990001.7213077
1998	306270004.024729
1999	276330001.44362456
2000	226469996.35174882
2001	227409999.50282264
2002	334640007.05070794
2003	548139997.1954526
2004	633839997.6696818
2005	872029997.1550704
2006	846450003.1173229
2007	1326310010.9696393
2008	1377900018.6510394
2009	1367700012.743473
2010	1893619995.0352323
2011	1542859987.3483174
2012	1575750008.2291667
2013	1407409993.497655
2014	1240550003.191456
2015	1187629996.486009
2016	972070005.5304916
2017	1143000003.3937387
2018	1297239994.7531517
2019	1120269998.434931
2020	1123640009.9471211
2021	1396759994.8644643
2022	1554650001.66744