Year	current US$
1981	17272603250.876865
1982	14002797792.279585
1983	19383845596.7507
1984	19563944406.514725
1985	20066119541.140667
1986	16811753105.809917
1987	18300739047.38859
1988	19655436169.348267
1989	24733257008.65442
1990	23832458690.015217
1991	25741973823.78142
1992	29830823047.213684
1993	45819015941.64075
1994	52840682286.2432
1995	56876843818.56071
1996	63227142167.95457
1997	62633964995.977325
1998	21401270650.533886
1999	18482704556.48975
2000	43378907116.967285
2001	43641239161.32637
2002	45036000741.30968
2003	48560454639.22494
2004	53330353482.53951
2005	69576095667.68234
2006	93975865283.77786
2007	108828385953.39679
2008	145172356503.26013
2009	156782422804.30328
2010	247122858931.6621
2011	296644988849.592
2012	293584085778.0698
2013	283993632367.2528
2014	273203170844.75452
2015	259318189356.18027
2016	278843504691.3667
2017	313606446914.171
2018	330197070617.95776
2019	345832227107.79456
2020	309504634030.99066
2021	390804204090.4106
2022	487568150873.0714
2023	492907175655.0464