Year	current US$
1976	72322792.6973461
1977	96693342.4073336
1978	146934800.286139
1979	261115114.418418
1980	334034873.363843
1981	236697667.919941
1982	276051668.358379
1983	376231972.485413
1984	453826973.721029
1985	758347205.623902
1986	1161484390.41992
1987	2012954545.81566
1988	2217139522.95084
1989	2790999075.617
1990	3331456029.64818
1991	3718662683.63158
1992	3793418942.07103
1993	4097336692.1388
1994	4401465617.84401
1995	4695481047.02049
1996	5027655243.07193
1997	5675003355.80286
1998	5940671350.99934
1999	6228827033.43851
2000	6318214000.31791
2001	5897250157.19176
2002	5473918813.89759
2003	5339775869.80523
2004	5661431014.73493
2005	6309056417.68859
2006	7992391904.99401
2007	9789741087.58999
2008	9118637749.14695
2009	8703960321.12573
2010	7885211136.02874
2011	8081886824.17054
2012	7627970305.74516
2013	7726052443.97927
2014	8322771529.48769
2015	7546144960.24368
2016	7188821774.82296
2017	7490512373.36878
2018	6656913637.84624
2019	6170221067.31238
2020	4940893802.78156
2021	4801608912.27109
2022	4278950590.03447
2023	4755831848.94262