Year	current US$
1960	267250000
1961	350260000
1962	419260000
1963	472250000
1964	556260000
1965	643010000
1966	831760000
1967	916760000
1968	928760000
1969	892760000
1970	823520000
1971	787962434.2348
1972	963357906.810008
1973	1206829603.80581
1974	1758170772.41438
1975	1678810025.60676
1976	1797533141.32813
1977	1812729459.30437
1978	2008628312.40343
1979	1842833502.45529
1980	1560175394.75063
1981	1731816630.65486
1982	1537555171.94638
1983	1607066062.97028
1984	1920572736.48102
1985	2190073374.34095
1986	2804364463.68941
1987	4007079601.07251
1988	6096568031.65077
1989	9515327542.25037
1990	13305058641.9314
1991	17517184954.7269
1992	20358625049.8439
1993	24472852732.4865
1994	29332156100.0463
1995	35982010292.4213
1996	37731192730.5617
1997	26179463599.9093
1998	28825064036.9466
1999	34062847866.224
2000	32015871090.0387
2001	32354786129.7247
2002	38046430773.6231
2003	41076930759.8806
2004	48664008741.8778
2005	50690684293.7999
2006	65291415167.6806
2007	85221341803.2528
2008	108660889971.921
2009	135482869047.989
2010	167530335376.446
2011	167389121491.419
2012	173327664053.903
2013	161328173498.308
2014	151253340027.006
2015	151265956382.606
2016	166157164486.519
2017	196120620197.399
2018	199296461437.522
2019	216816656654.641
2020	248743484788.605
2021	231737457648.57
2022	202273578187.125
2023	208280624418.923