Year	current US$
1960	423008385.7442348
1961	441524109.0146751
1962	449012578.6163522
1963	516147798.7421384
1964	589056603.773585
1965	884502309.953801
1966	925381492.3701526
1967	967240655.1868963
1968	1037379252.4149518
1969	1168556628.8674228
1970	1259554808.903822
1971	1417191656.1668768
1972	1490970180.596388
1973	1701829789.0212657
1974	2098944967.2084405
1975	2359555555.555556
1976	2447300000
1977	2936470588.235294
1978	2420260869.5652175
1979	2139025000
1980	1244610000
1981	1337300000
1982	2177500000
1983	2240333333.3333335
1984	3615647477.054337
1985	3519695443.525158
1986	3923244049.9579563
1987	6269522042.115557
1988	6508931651.666667
1989	5276480799.338676
1990	4304399310.30967
1991	3321729159.622774
1992	2857457761.909216
1993	3220439044.1894865
1994	3990430446.7121596
1995	5755818842.492457
1996	6044585326.938001
1997	6269333313.171083
1998	6584815846.527538
1999	5998563257.946589
2000	6193246837.096873
2001	5840503868.515731
2002	6178563591.120514
2003	6606884275.23087
2004	7939487547.773837
2005	9239221763.057926
2006	9977647682.969542
2007	11902564494.883343
2008	14440404132.204687
2009	25127805566.658375
2010	26673441430.785694
2011	27871725241.4723
2012	27305915910.78771
2013	28915786516.61233
2014	32612397257.44579
2015	32387183730.10015
2016	29203988696.262615
2017	30744473841.42399
2018	32927025619.679546
2019	35348155095.421455
2020	37600368239.882416
2021	40529788744.05949
2022	45565333216.414154
2023	49272882213.623