Year	constant 2015 US$
1960	15066221997.49843
1961	14279538525.094133
1962	15545479419.14257
1963	14750613289.169914
1964	14903741601.256634
1965	15427418371.476946
1966	15351438928.726946
1967	16561271755.896479
1968	17269638041.89023
1969	16909609984.985542
1970	17296522648.742966
1971	17266130871.642967
1972	18620910462.843746
1973	19992054259.668358
1974	19148093293.798435
1975	17980342071.54453
1976	17461340788.64531
1977	17858773853.631638
1978	20470143364.238667
1979	22201315217.96796
1980	21819078041.531635
1981	21565422313.989838
1982	25155178043.75624
1983	23487128597.400383
1984	24589420778.133194
1985	26007321667.19452
1986	26045896101.86288
1987	26845437719.15663
1988	26430471021.959755
1989	27456783759.942566
1990	29318874806.226936
1991	26576586103.064827
1992	30460910848.21483
1993	28643238040.993736
1994	28801042949.91444
1995	30038929810.523422
1996	32024926818.38123
1997	31999210528.602325
1998	32996299806.558968
1999	34671363593.409355
2000	34354585458.49412
2001	33368016581.766388
2002	35268682062.719124
2003	29890476985.757797
2004	36258758109.69412
2005	34150024566.849594
2006	34221328522.2785
2007	33953646332.773422
2008	35473242954.363655
2009	37787706815.43944
2010	36504231179.66756
2011	37960706503.39725
2012	34767215521.54334
2013	34096254243.63123
2014	39109755776.366776
2015	39164695526.17185
2016	34323025364.32029
2017	37149476167.800766
2018	38603613747.869896
2019	37711727372.68943
2020	35404276742.59529
2021	33841429089.502712
2022	36377988583.946465
2023	37843814882.31834