Year	constant 2015 US$
1960	22381594504.111332
1961	23478437942.190033
1962	24816716693.008636
1963	26305591327.90344
1964	27357792760.278515
1965	28698049595.736248
1966	30161355005.535717
1967	31682441058.42726
1968	33150549751.481853
1969	34465094723.024574
1970	35487063381.56781
1971	36687035978.42156
1972	37897462773.02186
1973	40079706320.555115
1974	42038314756.96833
1975	44055692754.006874
1976	46257855791.57608
1977	48697639959.31742
1978	51236315206.134254
1979	53720882911.42346
1980	56142442863.67756
1981	57633437779.241
1982	59651204127.42298
1983	60203934684.03327
1984	60948492879.17551
1985	60615541870.36213
1986	62499126176.123535
1987	64663027279.16509
1988	68281382762.411964
1989	71390756470.21571
1990	75117803007.78796
1991	76994870899.22505
1992	79486988169.0985
1993	81496434401.16753
1994	83872050874.65736
1995	86376167883.30002
1996	89676022529.58318
1997	93561581854.55241
1998	98513132340.04762
1999	102481501152.06387
2000	107807570796.58162
2001	112057651891.3454
2002	117772571941.34268
2003	124108218541.72565
2004	131436054647.24924
2005	137277687467.03195
2006	143019196860.2643
2007	149897607023.56302
2008	155672582317.75085
2009	159613354229.5447
2010	165343153639.86615
2011	174523227450.68793
2012	186389009779.06522
2013	197234992247.29596
2014	208643961973.38547
2015	222090173338.63116
2016	237968751159.8873
2017	252145421838.03064
2018	266682150977.01657
2019	282328164887.50073
2020	259864641783.13416
2021	270808807220.37836
2022	293254870884.38715
2023	309573400903.7578