Year	constant 2015 US$
1965	7855667535.87655
1966	8518378443.499239
1967	8947479345.76458
1968	9037286233.811022
1969	9307033731.358137
1970	9869450769.781792
1971	10060812955.236307
1972	10646164956.611591
1973	11453008013.793266
1974	11576664285.756819
1975	11718916799.848833
1976	13101451994.21103
1977	14635525178.824993
1978	14965132115.21719
1979	13648251949.174797
1980	12170380912.665436
1981	11059839817.579813
1982	10186162494.000841
1983	10323710970.81148
1984	10635627946.974174
1985	10917742336.757328
1986	10920168710.432182
1987	11018801199.259926
1988	11197437773.539677
1989	11343085341.377779
1990	13039937733.967773
1991	13159811180.773344
1992	14083605510.996906
1993	14844461072.275246
1994	15730059252.8531
1995	16740084991.142069
1996	17083177873.694696
1997	17363278810.21978
1998	17295876301.537754
1999	17733773363.052605
2000	18136497268.39372
2001	18489767489.070553
2002	18669811955.253532
2003	18836337632.976494
2004	19169906168.7604
2005	19916529534.292656
2006	20815815268.491985
2007	22081348465.39587
2008	22182317765.52548
2009	20923090094.414433
2010	21169792006.04297
2011	21803957058.531033
2012	22459780173.591377
2013	23216197610.567562
2014	23149017891.87087
2015	23806450000
2016	24158315071.956436
2017	24498605634.966938
2018	24841211099.76663
2019	25211595386.03656
2020	23859692741.151302
2021	26112092182.03034
2022	26582017245.235313
2023	27480199139.439903