Year	current US$
1981	20132438754.42739
1982	19277704745.210728
1983	14555238879.510704
1984	13453781566.238369
1985	13442122771.888496
1986	9876247647.02628
1987	10826036145.10226
1988	11603666169.576843
1989	9361914097.157402
1990	11648098317.675333
1991	12432347682.21942
1992	10578825840.96096
1993	13324416193.940428
1994	20239677009.090908
1995	35915528050
1996	48659760390.90909
1997	55066452836.36364
1998	60956404440.90909
1999	15394567925.397614
2000	14773113832.819157
2001	18003542236.359974
2002	35136811598.80229
2003	35430109480.0395
2004	36969352256.80478
2005	45831191839.731865
2006	58981822707.24455
2007	68626296199.04102
2008	85818756596.09554
2009	78911484157.83092
2010	87687604312.16357
2011	92155467756.51039
2012	101423872579.78882
2013	107969163747.06549
2014	114780797142.91277
2015	101720740023.40942
2016	84907969885.40698
2017	78330102219.43204
2018	89424636578.91716
2019	103949205785.66656
2020	104347102010.97626
2021	102967022450.61465
2022	111973613790.18549
2023	82449472969.0156