Year	constant 2015 US$
1972	135377249883.11842
1973	139454366129.24435
1974	193423692233.07892
1975	253077684023.70364
1976	314579443934.11487
1977	334508279301.691
1978	291288701670.5485
1979	209536591816.93497
1980	241241008424.3494
1981	226627140709.07782
1982	218455897433.8337
1983	262807331127.62823
1984	225732733276.3893
1985	217519621725.19843
1986	201448384879.88538
1987	184500550549.70428
1988	146672361831.3394
1989	165413516253.0132
1990	183675041805.6094
1991	211896337633.71368
1992	198558996013.85614
1993	156734115060.30606
1994	132825666450.02998
1995	154660587849.4164
1996	181259167695.91467
1997	180074176453.25424
1998	186323642801.40424
1999	190163651228.6181
2000	197543960084.01562
2001	226407253737.0293
2002	258830612479.20743
2003	293155081217.1422
2004	312244019610.721
2005	312228726109.44635
2006	329986497236.5483
2007	375140578585.3901
2008	426056665586.0041
2009	435772268463.62646
2010	481458599606.41943
2011	463757189057.2599
2012	461832968125.1418
2013	455960530879.893
2014	469227122861.097
2015	394269373506.7771
2016	445330050619.8149
2017	464371955082.7624
2018	464859278086.159
2019	450298762838.2616
2020	431248230377.9162
2021	456977908330.7481
2022	469590049156.6246
2023	474363492255.4433