Year	constant 2015 US$
1960	13776805549.284718
1961	14493265541.762346
1962	15667215020.556107
1963	16810875486.783043
1964	18828119953.6565
1965	19882554195.598827
1966	20856849047.438057
1967	22003917046.84409
1968	23676246054.435516
1969	26398970697.82683
1970	28669254201.496975
1971	30045382480.542744
1972	31818043671.8377
1973	36177129246.36296
1974	38094546340.48122
1975	34551748131.18879
1976	36037421453.02286
1977	36577953051.67287
1978	39431046604.41625
1979	41836368222.320724
1980	41585348547.87321
1981	42875153324.86515
1982	45774689840.52159
1983	50126076988.80704
1984	53676321218.86512
1985	54358075162.25607
1986	56249620517.439125
1987	58520030164.56841
1988	60472784380.73669
1989	62394240080.99739
1990	63834353681.24413
1991	62579507477.36893
1992	63929511493.44944
1993	68919617036.83601
1994	78298335801.43631
1995	87133357288.2081
1996	90978954453.69502
1997	103655660761.82631
1998	112897447481.96695
1999	121025638796.38515
2000	135598646447.48784
2001	136399491434.7821
2002	138716666161.1576
2003	144692593981.96512
2004	160984306263.83096
2005	171285626907.20605
2006	186040143614.6444
2007	194589445424.232
2008	198194137036.1761
2009	169539180199.90305
2010	187590380336.1633
2011	200196071670.5878
2012	202439860305.60355
2013	200207453035.3221
2014	208948459707.15323
2015	221067597699.18607
2016	226372736335.96533
2017	235725609918.1481
2018	245736824316.68103
2019	260417125041.5811
2020	246213181853.16486
2021	273600420636.2717
2022	291372895892.424
2023	300996195442.92926