Year	constant 2015 US$
1960	504385719.2938449
1961	546070496.7011799
1962	604429146.6429471
1963	758662836.668508
1964	942075819.9742862
1965	1021276871.039036
1966	984340828.3590808
1967	1267815533.9500175
1968	1342614161.3216681
1969	1551298091.6886814
1970	1722127289.5117264
1971	1822774865.1553645
1972	1939126540.6847153
1973	1952051014.820709
1974	2932693527.5660577
1975	3623399097.6524734
1976	4223601940.4815254
1977	4080474774.668447
1978	4234681182.7417665
1979	3481190621.7034082
1980	3730508910.3641086
1981	3461183598.5375156
1982	3399152404.345827
1983	3543630122.4378805
1984	4375947412.66914
1985	4073643491.2253003
1986	3698315505.812524
1987	3462754008.6688375
1988	3576608732.055126
1989	4920879675.991109
1990	5496434934.304345
1991	5656539167.82076
1992	5800950719.798412
1993	6528440446.623817
1994	6821484408.451924
1995	7246531458.677466
1996	7422619869.0501175
1997	7673352720.282373
1998	7195556274.061537
1999	6814182697.907834
2000	6050992015.024705
2001	5700896787.136152
2002	5281523635.248493
2003	5376669864.806722
2004	5448227960.5172
2005	5907127893.042792
2006	5503801066.548676
2007	5672550441.909767
2008	5327366472.760915
2009	5244265943.724745
2010	6020922632.564141
2011	6319979791.562095
2012	6089985043.758213
2013	6069122006.01588
2014	6093221515.588068
2015	6620833388.516613
2016	6402553836.134498
2017	6650914373.472596
2018	6741195233.803564
2019	7685131509.164534
2020	8456218579.945064
2021	8288840098.844751
2022	8858419392.80963
2023	8978606430.667767