Year	current US$
1981	125988117568.388
1982	105963383413.171
1983	63885621619.2617
1984	37873009619.9041
1985	28408789022.0314
1986	23846857288.7048
1987	22422842197.6529
1988	19472148757.3202
1989	24842714174.6489
1990	27686839356.432
1991	23767113664.668
1992	19900682113.5915
1993	10583681173.2898
1994	11222245166.0545
1995	14958321222.7667
1996	15953389329.5215
1997	18397072522.323
1998	14103559935.273
1999	23092995299.7231
2000	30462889839.1426
2001	19714416902.105
2002	21376897119.0815
2003	21459630255.8201
2004	31557039167.1442
2005	52185764221.4696
2006	101990229275.424
2007	53882371037.3558
2008	84348089253.3187
2009	52632611182.3454
2010	58402465764.1046
2011	69868630887.5236
2012	114659180216.653
2013	54754943637.7701
2014	76754810848.7679
2015	37954928708.6262
2016	27401737256.3654
2017	35371242381.9482
2018	41172366979.8853
2019	56519071641.8121
2020	77155901496.6971
2021	100364782650.633