Year	current US$
1970	18088055.4686079
1971	18595169.4553384
1972	21587929.1347569
1973	28152636.1982995
1974	27739095.1780152
1975	26902152.0966621
1976	30636601.5610251
1977	38974349.9350227
1978	45644996.6046448
1979	55731164.9357329
1980	71225404.9880449
1981	53604243.4247402
1982	56482221.8202635
1983	47068274.4186102
1984	44444548.2157486
1985	41713157.2163519
1986	63906822.9623905
1987	77253558.9823851
1988	95192308.0228634
1989	104595184.196643
1990	148441293.488894
1991	102919507.639421
1992	117373488.705585
1993	122069559.195466
1994	123500148.026446
1995	162899559.767902
1996	125069666.99407
1997	145319575.816794
1998	138791539.751447
1999	112376176.475956
2000	120397555.273095
2001	134389745.454221
2002	182365941.47608
2003	227622742.103468
2004	154625384.986854
2005	206975522.768417
2006	246260418.71511
2007	292594258.290741
2008	412973755.732318
2009	311884950.854748
2010	327942391.05128
2011	377098943.399435
2012	452300721.590026
2013	457316023.936874
2014	418272505.653666
2015	365149643.540142
2016	387872063.977367
2017	481187737.256483
2018	527316149.862617
2019	384648965.349203
2020	374384063.489344
2021	397343418.703006