Year	constant 2015 US$
1960	14872866396.25064
1961	15920174750.848047
1962	17245260650.733315
1963	18737156256.931793
1964	20060172567.421116
1965	21906679851.013874
1966	23549494281.424675
1967	25015031909.467583
1968	26310919277.198105
1969	28777629536.478394
1970	31194351251.888046
1971	33180011638.845833
1972	35560204650.853806
1973	37816462599.762085
1974	38919711945.71864
1975	38664956204.48522
1976	41078843373.41212
1977	43523314808.274025
1978	46540327586.30078
1979	50220189697.60592
1980	52351266023.763985
1981	52952230929.46928
1982	52127953623.30919
1983	50907130172.85587
1984	53925254341.41456
1985	55595558165.567444
1986	58362753380.83231
1987	61729699983.49188
1988	65364574808.32004
1989	68198098010.7801
1990	66260903262.28845
1991	67787813677.7587
1992	70881684617.95744
1993	74173803598.9844
1994	77278688319.22917
1995	80794086659.37082
1996	82663425508.99898
1997	86697472764.03474
1998	91492472094.97707
1999	96423641797.39696
2000	99578589154.21445
2001	105865455055.02646
2002	106835668951.80746
2003	106892740357.49985
2004	116244440869.29875
2005	113934735048.33228
2006	112328922913.8654
2007	111022754683.08836
2008	108975346038.92819
2009	106847683984.58502
2010	106406131530.01312
2011	106024654239.328
2012	106055693074.00299
2013	105730285936.28006
2014	104471711252.8399
2015	103375500000
2016	102069149649.47845
2017	99124231779.41475
2018	94801000739.69638
2019	96389357184.3707
2020	92359439312.91658
2021	92715228856.77975
2022	96023410438.33963
2023	96564521010.4364