Year	constant 2015 US$
1960	14230156270.704214
1961	10701077814.883436
1962	8082729316.788224
1963	13091744267.327631
1964	13888632758.504984
1965	14457839250.39905
1966	12410286995.080276
1967	12797288716.833391
1968	13627219006.818058
1969	14352774496.073324
1970	15760502788.376625
1971	16891357295.903496
1972	19675972377.583515
1973	20038578579.04399
1974	25355333285.357162
1975	28643523030.296444
1976	30715127634.220123
1977	33364872387.908558
1978	33659695711.49705
1979	38674149009.39199
1980	41219864940.322235
1981	44641114325.959656
1982	45935705676.301285
1983	48737783006.93024
1984	51369625641.42462
1985	53732625676.81846
1986	52657974567.92329
1987	49709128047.77007
1988	47273380431.299194
1989	49967964554.98427
1990	48818700452.30539
1991	47305318830.08369
1992	50190945618.65069
1993	49237316565.31555
1994	49631215015.59427
1995	50971258955.60854
1996	50767373740.50231
1997	50361235082.875465
1998	51569904139.67192
1999	53013412444.973236
2000	54973736359.13882
2001	55963263613.49495
2002	58929316585.01013
2003	61404347881.58059
2004	64228947884.13332
2005	66605418955.84627
2006	69203030295.12422
2007	72663181809.88045
2008	77168299082.09305
2009	82724416616.00368
2010	87605157196.34795
2011	92423440842.14693
2012	98061270733.51842
2013	103454640623.86183
2014	108834281936.30266
2015	113187653213.75453
2016	115904156890.88492
2017	118106335871.81158
2018	121177100604.4784
2019	124085351018.98587
2020	119866449084.34035
2021	121664445820.60544
2022	125679372532.68552
2023	130078150571.3292