Year	current US$
1960	238438301.17118502
1961	211572015.68238682
1962	239475795.74579528
1963	254143983.50178483
1964	257291287.22174293
1965	250835035.12625584
1966	308588670.9924448
1967	302663380.2649564
1968	359837630.9582379
1969	486948425.93371505
1970	450739685.0349772
1971	578539089.0464442
1972	725132618.2048087
1973	834756923.3883772
1974	1741126612.595324
1975	2318859825.3186207
1976	2617783200.167267
1977	3129344737.814466
1978	2896334393.378453
1979	3575286667.6538024
1980	4628789865.170261
1981	5116427311.4703045
1982	4063359061.388894
1983	4691609843.600706
1984	4200952391.0563145
1985	4173565273.265561
1986	2957326783.0210514
1987	3286057180.0971036
1988	2749847813.102632
1989	2965896119.6848044
1990	3440367092.874131
1991	4163791666.6666665
1992	4987517668.027238
1993	5602184877.656739
1994	4594640000
1995	4323552894.211576
1996	5252195608.782435
1997	4903093385.214008
1998	4696403846.153846
1999	5078313953.488372
2000	5523717814.527946
2001	6168564305.007272
2002	6591622610.817406
2003	6404206462.101199
2004	9449227722.772278
2005	11281149425.287355
2006	11878533724.340176
2007	15289807769.323189
2008	19270826922.4026
2009	16712093023.267773
2010	19548915279.919468
2011	21157918816.488937
2012	11943881780.991234
2013	7888121089.691037
2014	10159432247.088488
2015	6058999264.610904
2016	5723436976.02329
2017	6828054263.105284
2018	7683752907.056977
2019	6546690314.731368
2020	3750745658.742787
2021	6560493568.909634