Year	current US$
1980	272486335.89811623
1981	385638031.9148936
1982	444947074.4680851
1983	139361170.21276596
1984	103191489.36170213
1985	435638563.82978725
1986	424202127.65957445
1987	507712765.9574468
1988	660638297.8723404
1989	425531914.89361703
1990	886169680.8510638
1991	-490957712.7659575
1992	-587234042.5531915
1993	163563829.78723404
1994	401329787.2340425
1995	673670212.7659575
1996	714627393.6170213
1997	607713031.9148936
1998	44414627.65957447
1999	1052925531.9148936
2000	2043882978.7234042
2001	1812765957.4468086
2002	1331914893.6170218
2003	1775797872.3404255
2004	2166223404.255319
2005	3109840425.5319147
2006	4103191489.361702
2007	4688031914.893617
2008	4955053191.489362
2009	4350797872.340425
2010	4783244680.851064
2011	7102659574.468085
2012	5659840425.531915
2013	5771542553.191489
2014	5520212765.957447
2015	3503457446.808511
2016	2830585106.382979
2017	3005585106.382979
2018	2910372340.425532
2019	4356648936.170213
2020	1952393617.0212765
2021	7657180851.063829