Year	constant 2015 US$
1960	8393239786.461322
1961	8762423543.739447
1962	9347079142.428509
1963	9737148370.35976
1964	10645972569.32851
1965	11600297891.941792
1966	12327038820.917181
1967	13370932900.164837
1968	13550652907.701166
1969	14590042364.612885
1970	15450985534.78671
1971	16214493501.931631
1972	17133231198.578115
1973	18265050845.86913
1974	20508491458.277332
1975	22956195612.875378
1976	24134461688.793736
1977	25709356432.85272
1978	26610000193.27889
1979	28165658202.840218
1980	28222946791.43475
1981	30147084017.588657
1982	29530068365.931625
1983	30592533471.942562
1984	31412824089.803886
1985	32618063533.60623
1986	32261138784.256622
1987	32332958663.179665
1988	30554693534.807793
1989	32204646825.917557
1990	32397874043.38435
1991	31911906287.77771
1992	30954548666.43435
1993	31759367127.035908
1994	31410014803.164814
1995	33169670071.822235
1996	34917114041.60544
1997	33811278076.69997
1998	34687844297.88669
1999	35926291462.50544
2000	37231617845.14529
2001	39005473769.28981
2002	40066941423.212074
2003	41264497490.24684
2004	42947920347.2152
2005	44707181738.796455
2006	47748012623.00349
2007	50323854421.33982
2008	49150296008.61639
2009	50144884444.517555
2010	48054902779.03748
2011	44712481881.874985
2012	42536864682.957794
2013	39834253270.27733
2014	39339372797.6203
2015	40407720540.977325
2016	40363647360.42303
2017	39930539017.95154
2018	38552174511.23474
2019	39493204540.87966
2020	40674479615.75739
2021	41409448692.32966
2022	42298409282.01755
2023	43036927690.32692