Year	constant 2015 US$
1960	606063515.1732985
1961	600266862.710363
1962	603713520.9397913
1963	672020020.2574306
1964	753408154.1905142
1965	969294291.9594587
1966	1033762467.3361189
1967	1090083996.0163367
1968	1224738666.1296585
1969	1378976621.5878327
1970	1709307478.961708
1971	1835110504.0763187
1972	1843022151.3744678
1973	1965535184.537111
1974	2170689681.924118
1975	2011673404.9317913
1976	2337147607.453803
1977	2923157838.4498663
1978	3142490634.4124427
1979	3234140409.948775
1980	3123142348.5732718
1981	2300566030.3780003
1982	1883833718.0133083
1983	2181656321.704348
1984	2414462418.1013083
1985	2559065397.1376705
1986	3009089294.536707
1987	3538151331.671116
1988	3506034743.7177286
1989	4086796654.2040715
1990	4526950575.836697
1991	4391434241.179441
1992	5404143807.463342
1993	6171097167.978238
1994	6460294334.676074
1995	6676345153.909834
1996	6886081175.222097
1997	7918315511.703729
1998	9211228780.396461
1999	8927437674.050514
2000	8579508840.652898
2001	8580373144.542294
2002	9106323977.660128
2003	9520079476.328129
2004	9978139615.528122
2005	10671175832.315147
2006	11505257262.405231
2007	12665960935.211014
2008	13509351149.444275
2009	10978200182.623047
2010	13034026764.576492
2011	14424878921.500822
2012	15553621482.620838
2013	15815021704.194958
2014	16613091609.83103
2015	17360351863.90629
2016	18912094837.699768
2017	19860073659.176422
2018	20427269013.931297
2019	19957966917.06613
2020	17377542401.159607
2021	20722063988.325287
2022	21969897809.04535
2023	23202855018.10309