Year	constant 2015 US$
1960	25048128911.530056
1961	26807709842.823803
1962	27879630217.688644
1963	29438379330.16325
1964	32445051641.006607
1965	34724179735.541756
1966	37150607870.94917
1967	39778054223.341354
1968	42895037634.30932
1969	45601055251.564
1970	49686096426.19251
1971	52373884746.65423
1972	55519876372.14758
1973	58905507248.83547
1974	58314268910.166336
1975	62671409245.11751
1976	66248483242.54406
1977	72082050162.02412
1978	77784586937.66006
1979	82245089493.50186
1980	82619203926.06593
1981	82054174500.89914
1982	84835448158.49915
1983	86614410060.96632
1984	86945237957.61554
1985	87389474714.37999
1986	86095115866.66397
1987	88389547472.49953
1988	93742764100.1382
1989	99634807896.51866
1990	102244271263.97958
1991	105198891887.07217
1992	107589853333.4179
1993	106766709048.40187
1994	108843226774.95421
1995	111589518600.62569
1996	114574448896.86436
1997	119686419698.64287
1998	125151277732.362
1999	129528168506.27919
2000	132796738006.4159
2001	137608736465.03345
2002	144606646183.16745
2003	151161801453.75885
2004	156613999945.396
2005	161664554770.62686
2006	166161887606.87296
2007	172934971180.41513
2008	179132780086.75848
2009	176141150551.68622
2010	164658823836.8659
2011	150389446230.82413
2012	139004430453.589
2013	134250815672.78899
2014	134113668784.37883
2015	133645720627.62883
2016	132830975355.19485
2017	136146335232.955
2018	138527620617.38156
2019	141008627910.9046
2020	130513232883.52727
2021	138058185713.35812
2022	148340736225.84952
2023	150987452598.12607