Year	constant 2015 US$
1960	7657874898.30218
1961	7920515043.762028
1962	8245981569.342713
1963	8609297389.77824
1964	8799504964.726355
1965	8919970088.233494
1966	8540131860.984336
1967	8802772006.066313
1968	8835241939.819048
1969	9365902029.415876
1970	10276592945.779488
1971	10812632834.053448
1972	10543651789.24255
1973	10847792302.309956
1974	11591139095.748476
1975	10150171684.003643
1976	9791852068.407516
1977	10014529285.39168
1978	10863354338.497128
1979	10590147340.681108
1980	10640100636.063051
1981	10267370787.557096
1982	9556493927.87131
1983	9120360630.361233
1984	9909050150.574697
1985	10413581059.533628
1986	10954999871.334667
1987	11480281037.404419
1988	12126410628.724485
1989	12743144436.397469
1990	13167340507.28038
1991	13862816574.153797
1992	14400613325.408932
1993	15099043151.441015
1994	15597311536.102161
1995	16238738334.776846
1996	16986119958.801989
1997	17698918267.493744
1998	18530836590.656113
1999	19346192812.374855
2000	20062001962.227745
2001	20864482066.412106
2002	21803383667.388973
2003	22937159647.11372
2004	24221640585.236008
2005	25650718304.68064
2006	27292341859.037704
2007	28478690589.004734
2008	31084433518.164406
2009	32590314875.06195
2010	35164855870.69905
2011	40104506631.69576
2012	43831333975.41507
2013	47036511237.55633
2014	48379986962.94268
2015	49406010054.266335
2016	51072704881.72521
2017	55224351374.44889
2018	58648304058.64379
2019	62465003607.23096
2020	62786037290.3279
2021	65973349399.44858
2022	68491885061.46412
2023	70508824388.01715