Year	constant 2015 US$
1960	4727739746.571536
1961	4826516220.94735
1962	5095783596.364327
1963	5442175895.649537
1964	5657500838.410728
1965	5935478858.290484
1966	6361087691.734302
1967	6762931564.891766
1968	7339771963.561567
1969	7668160505.079934
1970	8069284227.951538
1971	8477859236.601202
1972	9153331417.377352
1973	9678655892.405611
1974	9963166545.292807
1975	10691575418.028084
1976	11184945381.008108
1977	11740973137.01598
1978	11981979454.6341
1979	11997956711.045912
1980	11833371991.065466
1981	11865986702.000885
1982	11398616583.279902
1983	10937870663.07248
1984	10915922108.52048
1985	10732928705.764578
1986	10456675549.576675
1987	10714274143.045914
1988	11026005730.724852
1989	11443905787.966902
1990	11974420933.740677
1991	12605057005.510117
1992	12812599040.093473
1993	13359606833.349638
1994	13983135100.936197
1995	14637304837.90413
1996	15275687754.507015
1997	16032477212.793756
1998	16838807367.908745
1999	16910689781.90016
2000	17334777888.126236
2001	17626660726.911728
2002	18064782966.664845
2003	18554580623.708836
2004	19328918118.465675
2005	20183533307.22299
2006	21151739180.87678
2007	22117185836.64301
2008	23477060537.735123
2009	24265185360.046368
2010	25266542246.061188
2011	26581436461.71759
2012	27943010890.65327
2013	29842021104.139645
2014	31471565408.631233
2015	33000198248.914616
2016	34407300587.15242
2017	35850757840.60679
2018	37364958928.44147
2019	38193230080.24631
2020	34855949803.364365
2021	36986126802.97651
2022	38319728337.57138
2023	39256060138.67176