Year	constant 2015 US$
1976	3358220360.725
1977	3283796455.047656
1978	3328150342.363281
1979	3435043033.271875
1980	3357623442.7898436
1981	3230002832.0585938
1982	3448285069.6214848
1983	3329156670.5550785
1984	3337488002.8507814
1985	3225711236.197656
1986	3292081187.801953
1987	3257812772.662109
1988	3357227346.6878905
1989	3340388269.546875
1990	3595023696.9710937
1991	3487704953.1124997
1992	3415336974.821484
1993	3352824799.5378904
1994	3614398011.0671873
1995	3624234952.3554683
1996	3622171258.378906
1997	3633588146.023437
1998	3820629829.1249995
1999	4006828282.4296865
2000	3862647082.292968
2001	3836296151.140624
2002	3774296570.812499
2003	3681541293.156249
2004	3997430708.246093
2005	3905074855.230468
2006	3846681191.796874
2007	4209159053.164061
2008	4511201747.378904
2009	4213153299.57031
2010	3999272499.644529
2011	4569340222.847653
2012	4238771952.2148414
2013	4112476099.8749976
2014	4226789212.996092
2015	4315472578.343748
2016	4412321958.566404
2017	4642357266.179687
2018	4776486279.527342
2019	4622441509.792967
2020	4274786740.64453
2021	4546506447.558593
2022	4847606055.816405
2023	4705410883.753906