Year	constant 2015 US$
1960	9089345846.216269
1961	9363465911.074036
1962	10029700698.348377
1963	10947754956.450062
1964	11067946153.21722
1965	11465790715.521858
1966	13039445964.384153
1967	12654109163.899477
1968	13874635250.54859
1969	14934374210.540977
1970	15525809727.406435
1971	16189668472.00455
1972	15894578296.120192
1973	17406554559.869907
1974	17922930984.14635
1975	18697370094.28098
1976	19840577780.645027
1977	20283150277.429188
1978	22827753863.162693
1979	22385181366.378532
1980	22790851907.799404
1981	24353160435.53519
1982	24955892463.708897
1983	26146671048.07118
1984	27302179389.499043
1985	28532997852.950882
1986	28641820985.848835
1987	28661276102.661026
1988	31673681072.073418
1989	34714076312.290344
1990	33087126596.493618
1991	35488640942.05653
1992	37187762865.97913
1993	22016839673.33136
1994	23485862324.118717
1995	23786257510.796844
1996	25044841655.135323
1997	24924359828.91569
1998	25095138770.687664
1999	26306200812.745655
2000	28094812492.00812
2001	28960443194.496872
2002	28993223038.770638
2003	32459445866.42144
2004	32098462889.974518
2005	32078922171.51855
2006	33338084443.622
2007	33974371861.74737
2008	34970717251.89571
2009	34885269968.23323
2010	34725533266.77217
2011	36912648414.42808
2012	37911190690.083305
2013	38177534151.40473
2014	38067574250.507545
2015	35605906227.26765
2016	35193701130.84443
2017	36890679559.35924
2018	39139827816.196365
2019	38756240044.13914
2020	37531938876.26334
2021	38374733532.0358
2022	39328933408.11787
2023	40089460482.935165