Year	constant 2015 US$
1960	24061994124.85896
1961	25675822503.046883
1962	27684819939.384327
1963	29054138890.337833
1964	31650400934.349815
1965	31244069321.804245
1966	33359555753.42316
1967	34085725761.401405
1968	36231818950.66628
1969	38862848239.33064
1970	41448461052.82532
1971	45450541441.671974
1972	47493460236.92702
1973	50085490596.43267
1974	52611535417.345825
1975	54130354625.35244
1976	57716281844.99053
1977	60090444743.64412
1978	65186469889.69014
1979	68567529294.08217
1980	72248732386.02771
1981	74426584201.09712
1982	75820014435.16104
1983	76060096476.6754
1984	78359552558.7851
1985	80093441834.95116
1986	82491958496.2707
1987	85799133848.39183
1988	89694255140.70297
1989	92887231082.35735
1990	95698445316.79843
1991	97427891675.37312
1992	101429972064.21979
1993	107208067162.26393
1994	115035663151.51086
1995	121673370525.89606
1996	128029088068.88596
1997	134786248393.86235
1998	134610859023.58978
1999	130285439019.24046
2000	132119573407.3015
2001	134332495662.57312
2002	136362835381.81526
2003	140090150916.45517
2004	146154851873.55002
2005	152848421536.9874
2006	162282433118.33334
2007	172366387042.44424
2008	179630276884.47955
2009	183609076557.44418
2010	192940964762.82257
2011	203879472507.97632
2012	215076935956.47635
2013	226592076049.50406
2014	236391543426.27676
2015	244439959631.54858
2016	248415476767.42853
2017	254204413279.41815
2018	264298214814.78308
2019	275644121884.7788
2020	264028317321.15454
2021	300375121007.0368
2022	327126704068.0815
2023	330748818085.57666