Year	constant 2015 US$
1960	20087369740.184113
1961	21410556440.31218
1962	21335616889.438965
1963	22755936270.523376
1964	26977551378.159515
1965	33389632950.018486
1966	37179804634.374176
1967	42358015520.15926
1968	52349921500.83185
1969	56804203231.98465
1970	62106522752.06622
1971	62887312346.39601
1972	84223835124.0565
1973	87808715832.47165
1974	132375143745.89763
1975	178956934946.49237
1976	232227873634.5384
1977	236541970381.83267
1978	191945040206.7005
1979	127698627718.89796
1980	147100280625.6917
1981	127370523836.611
1982	118628547106.70856
1983	154587506503.5736
1984	118442356877.23383
1985	106895363290.97224
1986	102808424637.23538
1987	101886263802.36723
1988	66152345056.32054
1989	79550856621.80527
1990	98691559821.24458
1991	128675436090.4134
1992	119136783800.07571
1993	86580826834.11552
1994	60044198794.523766
1995	77328570421.30211
1996	99273065003.1587
1997	96458331057.5176
1998	97733068573.11661
1999	101374272685.9229
2000	105795993203.17697
2001	121421275409.29936
2002	143685214360.7912
2003	169575458928.97507
2004	178855565774.96057
2005	172740804798.90256
2006	181373205083.67105
2007	204945110924.98196
2008	224770236206.94064
2009	231857706047.69467
2010	254360261003.82608
2011	243354908793.22522
2012	226070718241.29895
2013	205632681486.18015
2014	213909953070.66812
2015	130556323027.2677
2016	173399797995.32248
2017	184943212812.91263
2018	176276701850.6228
2019	161672716004.97998
2020	193832456878.85623
2021	200287513908.77963
2022	202743646192.01468
2023	209491192153.775