Year	current US$
1976	21309832783.61586
1977	26045052868.204144
1978	31352969771.628925
1979	38215045805.45548
1980	42339039566.04977
1981	37080419906.6874
1982	38093044284.90764
1983	38948300137.88877
1984	36862567911.422874
1985	37877023809.52381
1986	54505611536.72826
1987	69022578363.08229
1988	74313843753.48267
1989	74628498179.9272
1990	93400381217.4755
1991	98105599292.86977
1992	111874892311.54521
1993	111172913758.42896
1994	118406211299.8434
1995	142014507984.16815
1996	139220977384.9753
1997	124464471755.55304
1998	128473877278.79057
1999	127598944841.20877
2000	117010534248.94142
2001	117493087922.47258
2002	129270878018.2512
2003	158396412336.933
2004	181833976494.5526
2005	191464758905.02716
2006	204133360775.18796
2007	234738493608.54977
2008	263666745149.21875
2009	249767705258.53107
2010	244364474529.3338
2011	268837337866.14838
2012	253832627257.41803
2013	268123338491.82822
2014	277296175233.74414
2015	240185886005.48425
2016	247808000801.34692
2017	261051019047.29456
2018	286004425281.10565
2019	280578161590.03876
2020	274915455590.1019
2021	297885341145.61536
2022	292639720811.6937
2023	321449669055.67236