Year	current US$
1980	185350517.019722
1981	189852889.048442
1982	175317759.871366
1983	196787453.437649
1984	163493838.966403
1985	118585941.133445
1986	139683644.274728
1987	195979528.357947
1988	199622801.471859
1989	214960477.514251
1990	252714286.166564
1991	276506684.611856
1992	318794458.064517
1993	327447859.350614
1994	331911184.521798
1995	340246286.04119
1996	301308415.323424
1997	353121111.328069
1998	291298780.518036
1999	252046373.002701
2000	257010297.680049
2001	225503785.610742
2002	223393397.10835
2003	350895865.797716
2004	469657095.069429
2005	516135672.954792
2006	591731199.479838
2007	657987951.91653
2008	660266635.032779
2009	703082355.03825
2010	903715217.426301
2011	1019086961.52273
2012	1080397834.68074
2013	1053964743.97514
2014	1102708788.95996
2015	1009375137.06192
2016	937502654.958889
2017	1129285245.42315
2018	1175244620.04452
2019	1091172150.5652
2020	939862981.73159
2021	1076906742.1136