Year	current US$
1960	20750000
1961	19100000
1962	24200000
1963	32900000
1964	40400000
1965	34800000
1966	50100000
1967	52000000
1968	31100000
1969	42900000
1970	55220000
1971	37137153.2529582
1972	121085163.679806
1973	210374877.873786
1974	318634536.484689
1975	253351256.143442
1976	477373065.268526
1977	623060643.323892
1978	635758057.823625
1979	721996659.295223
1980	1012960309.22628
1981	632399608.983867
1982	304200000
1983	644471402.410167
1984	611190104.784883
1985	718167574.692443
1986	644149017.16145
1987	491122129.693995
1988	397618781.876169
1989	540419914.842169
1990	838481822.708455
1991	924296672.81752
1992	868163838.739395
1993	1379948897.96451
1994	1844238464.21111
1995	1627628518.50971
1996	1858453220.73186
1997	2092790479.14598
1998	1619731403.16665
1999	1642369254.49258
2000	946926261.644739
2001	839767943.475717
2002	714626724.675629
2003	812578785.546265
2004	1069609342.03766
2005	1714231666.52374
2006	1489487163.35999
2007	2816381598.57904
2008	3738153054.27756
2009	2873184731.6349
2010	1434845856.38252
2011	1664304383.64451
2012	1079956143.68357
2013	3328037833.46757
2014	3484140017.73337
2015	2085430599.56405
2016	3781142470.05677
2017	1678194706.6482
2018	1896101675.1971
2019	1865090985.11069
2020	5235586638.35225
2021	6082559726.18178
2022	6490900849.42025
2023	2698912577.71816