Year	current US$
1960	92000000
1961	52000000
1962	28000000
1963	25000000
1964	46000000
1965	61000000
1966	52000000
1967	52000000
1968	142000000
1969	195000000
1970	189060000
1971	188044025.849893
1972	309043483.002056
1973	516155317.057911
1974	431089034.818171
1975	474665894.113537
1976	1100828618.32769
1977	1747252951.90255
1978	2366441387.39993
1979	3843764039.71989
1980	4830827437.00078
1981	4740513187.97346
1982	3861409076.77894
1983	1900925876.01102
1984	1364068614.66988
1985	1595010984.18278
1986	2695823615.03553
1987	3086138773.42564
1988	3247772658.1529
1989	3616143243.88257
1990	4627510136.43283
1991	6533355218.92746
1992	7746326824.97559
1993	7930418098.38275
1994	7990533504.23283
1995	8348714143.01174
1996	9844969380.18383
1997	9802634821.19727
1998	8651058309.10358
1999	8007902588.69517
2000	8915988109.66315
2001	10153666184.9202
2002	10732388354.5963
2003	10783866157.177
2004	13393796155.3753
2005	14787009123.0026
2006	15296233305.6523
2007	20767267611.8658
2008	23478813399.4212
2009	24747664965.7224
2010	27766243374.4625
2011	31386030250.8778
2012	36444016599.9643
2013	42757937971.8365
2014	46408086548.4249
2015	46103762877.525
2016	45961564720.1639
2017	46699124663.7263
2018	47358571768.3219
2019	51973465671.4932
2020	58247760144.891
2021	57745106149.2555
2022	56431563332.1932
2023	58730697948.5872