Year	constant 2015 US$
1960	20724517597.712296
1961	21698569924.804813
1962	23022182690.21786
1963	24334447103.560272
1964	25478166117.42765
1965	36283561915.508934
1966	38968545497.25685
1967	41891186409.55098
1968	43943854543.6188
1969	46975980507.128586
1970	49183851590.963806
1971	52233250389.603424
1972	55419478663.36892
1973	59243422691.141556
1974	62738784629.91882
1975	66628589276.97385
1976	69027218490.94499
1977	74273287096.25694
1978	77541311728.492
1979	79634927145.16139
1980	79794196999.45224
1981	82081693119.95702
1982	84413706698.63618
1983	85023988989.21497
1984	87283967158.24722
1985	87063079818.0462
1986	88399453538.60863
1987	91980718366.00537
1988	91920688857.96638
1989	92597615626.79816
1990	89359792060.7738
1991	78733089074.84807
1992	76320565233.18983
1993	75880875956.07385
1994	78117202649.17258
1995	79280778283.94476
1996	79346116187.69745
1997	81840061575.36269
1998	85031827660.58371
1999	87643177933.10838
2000	91568886542.02428
2001	95299483590.34482
2002	99817905184.68132
2003	103884735932.98308
2004	109083772922.95023
2005	113768132959.82384
2006	118257499574.87938
2007	118585513679.9334
2008	119776044677.93756
2009	111873380290.51398
2010	113077422068.68158
2011	115188393760.12456
2012	113748278485.31766
2013	115798616344.32082
2014	120699456740.62273
2015	125174166987.37169
2016	127929252772.23383
2017	133394359768.37642
2018	140547430034.09918
2019	147383974295.8661
2020	140770787502.3494
2021	150710923361.94327
2022	157618619387.2894
2023	156187937314.84885