Year	constant 2015 US$
1960	22255159155.780346
1961	23603412489.40434
1962	24890513882.398087
1963	24777039450.871822
1964	27490816189.89521
1965	27932389687.14144
1966	28649361617.875446
1967	28111938580.076385
1968	30779608064.492527
1969	31155383343.936924
1970	32906269869.12211
1971	31103176396.752525
1972	26756902909.352165
1973	27646751931.216354
1974	30298616294.943653
1975	29059943993.948383
1976	30705132388.3112
1977	31525897787.283546
1978	33755988640.503487
1979	35376827870.8259
1980	35666614279.80414
1981	38246717074.68496
1982	39063027403.47844
1983	40579081622.180695
1984	42528220713.837135
1985	43949520082.244606
1986	45783701688.12291
1987	47510846898.76116
1988	48658830994.1357
1989	50039078698.33422
1990	52852404884.44429
1991	54694431600.88948
1992	57671277526.10373
1993	60388495364.076866
1994	62737684189.65844
1995	65950655343.30576
1996	68933550207.46284
1997	72028595263.91733
1998	75757534997.08264
1999	79295530342.61078
2000	83492876462.58002
2001	87732050072.43361
2002	91094928286.7534
2003	95412433810.54909
2004	100411599680.56961
2005	106974446547.81476
2006	114111679980.53601
2007	122166366287.0495
2008	129513194709.78996
2009	136047297014.32117
2010	143627564235.82758
2011	152912194516.00174
2012	162884300249.5256
2013	172679519745.8842
2014	183145727938.25848
2015	195146607942.29083
2016	209028319381.09058
2017	222803808194.79813
2018	239111738272.2441
2019	257958322599.36734
2020	266852770837.43774
2021	285368828340.4833
2022	305629526532.026
2023	323279975125.39056