Year	constant 2015 US$
1960	7931329260.354334
1961	7938622977.5620165
1962	7754240943.634467
1963	9138635525.892696
1964	10935556479.25212
1965	12843765440.328764
1966	12697734242.04161
1967	13025402526.920088
1968	13614938787.674398
1969	15321433333.071905
1970	17508058381.108482
1971	19400738782.968773
1972	20534166751.629314
1973	21606500035.29217
1974	23017324539.044907
1975	25263240449.543934
1976	24951100723.881813
1977	23463574548.848286
1978	22812943603.096287
1979	23763871787.431263
1980	27822158783.439327
1981	30313472985.79684
1982	29661900915.24385
1983	28611527210.27079
1984	28185354529.55522
1985	26204992667.069244
1986	21337416769.275402
1987	20245633573.058723
1988	22793258409.34222
1989	24275843679.170544
1990	23707639580.572033
1991	21956049471.793694
1992	20801210913.9106
1993	20685766216.756718
1994	22391753605.684383
1995	24785715513.658062
1996	27018467166.50849
1997	28569832722.909317
1998	29931266659.86964
1999	27657955076.976154
2000	28727131098.68477
2001	29545535617.652355
2002	30577445928.45882
2003	33707663069.478527
2004	38048192412.96555
2005	42227305614.593704
2006	47355665116.42497
2007	53871194554.02448
2008	60778837546.173935
2009	56720786443.097244
2010	54501726336.593285
2011	58231557255.68008
2012	59254941038.53121
2013	62429743057.24391
2014	61607362615.38582
2015	62438804198.98515
2016	61232507956.42592
2017	59987567553.153946
2018	59259014218.8272
2019	58225808402.675934
2020	49708818880.53205
2021	50026717733.14406
2022	52425329174.08456
2023	54651939281.764915