Year	constant 2015 US$
1965	37807838779.461494
1966	38138148570.222466
1967	40252123967.477425
1968	42520068232.71572
1969	47430479719.07083
1970	46210706132.78397
1971	49060049838.55737
1972	51019792312.33243
1973	53043360354.751854
1974	56159185564.30764
1975	54725565936.30094
1976	53065336240.44854
1977	57211695369.9228
1978	51191524616.28137
1979	56282357419.45267
1980	57530318238.62994
1981	50585920820.27415
1982	49161817404.93918
1983	52513621577.05508
1984	53813287125.44304
1985	48727968695.17455
1986	53625751965.7239
1987	54204387632.712135
1988	51551148679.33949
1989	47691380171.643196
1990	45112679993.17275
1991	49793646467.20342
1992	54866978634.77191
1993	56804377641.03993
1994	59360367902.77613
1995	55107442936.30413
1996	58662907786.20651
1997	64031404788.79672
1998	65215189236.85293
1999	60044363410.41944
2000	57748736303.00665
2001	53497281607.21426
2002	47636536297.70445
2003	55242751606.90397
2004	61858654534.98252
2005	66450520964.18954
2006	72497376415.56277
2007	77959305197.54895
2008	80782289948.48691
2009	74917637563.8265
2010	83089610067.77629
2011	89459765618.19478
2012	86853510751.15005
2013	88159380793.32439
2014	83703763913.68245
2015	84344878153.77855
2016	79620603665.37839
2017	81670094128.59581
2018	77745909363.68687
2019	72959443199.89766
2020	67344154176.67406
2021	77926793664.59894
2022	81488612157.77068
2023	79790774955.30559