Year	constant 2015 US$
1960	282030127.4438701
1961	221010423.48139384
1962	382489410.6316289
1963	523132391.8218674
1964	666751984.6378589
1965	350863349.24165213
1966	546267866.598731
1967	571206376.3704522
1968	618409385.9853606
1969	680040639.8348818
1970	860808481.992721
1971	1152817035.7964673
1972	1369743428.3509598
1973	1624293843.2361226
1974	1747751468.988156
1975	2001135486.4425023
1976	1841778233.5270405
1977	2022541489.2656667
1978	2011467797.6746562
1979	2287400300.3801193
1980	2434414065.21297
1981	2042991022.0573537
1982	1708112913.810277
1983	1974715684.658869
1984	1804175551.978848
1985	1715353270.7668352
1986	2181070985.532934
1987	2794254545.076905
1988	2637854658.3902745
1989	3005182150.9250426
1990	2745994772.518785
1991	2512585213.361101
1992	3102861129.26691
1993	3609992550.7102876
1994	4192624395.1948857
1995	4427178839.388345
1996	5051948094.527611
1997	6110938027.002853
1998	8291130809.812548
1999	7748606309.898392
2000	8957854007.976414
2001	8725577778.054892
2002	9300721963.893671
2003	7879704983.214835
2004	8000513470.816377
2005	9104852668.284197
2006	11128837067.798775
2007	12596794809.147112
2008	13391930353.025108
2009	11436762182.240025
2010	13413111406.759193
2011	13113221453.179976
2012	13053411449.823236
2013	12731536090.084028
2014	13921825075.58521
2015	16549927525.500383
2016	18588398232.75648
2017	18539660686.638966
2018	21011586657.47837
2019	22719130263.31958
2020	19978030227.50816
2021	24387467209.421833
2022	25367857706.486515
2023	25880744700.85279