Year	current US$
1970	1016656729.73712
1971	1070215328.84271
1972	1152646767.60697
1973	1268925188.23258
1974	1405194624.18129
1975	1420665697.36114
1976	1590176230.91529
1977	1936007966.02688
1978	2148867316.56315
1979	2515896660.33162
1980	2923852398.65598
1981	3293405505.41637
1982	3711132824.81967
1983	3889580135.01604
1984	3899840535.36371
1985	3642565375.43676
1986	3506909261.25468
1987	3718443058.89908
1988	3987884724.99026
1989	4103672518.66313
1990	4903740739.4288
1991	5129435371.941
1992	5859597737.13756
1993	6515276626.17408
1994	8209736489.97703
1995	9523194876.60347
1996	10501076332.4427
1997	11814840606.5975
1998	11620408819.2058
1999	10989276763.7047
2000	12195361169.3688
2001	11833295392.3641
2002	11728694703.9509
2003	11237195396.604
2004	13692083320.7898
2005	16635846041.9013
2006	17997910172.0201
2007	22643909892.2514
2008	26604507707.9795
2009	27023143846.7292
2010	32474007688.3721
2011	36440279767.6902
2012	42139377136.6109
2013	43453978969.2161
2014	43144924717.2441
2015	34147269380.4018
2016	32799755311.5032
2017	35619213877.3765
2018	36660885605.8046
2019	35804163159.3034
2020	29487294357.4653
2021	33764255885.5322