Year	current US$
1980	66262918.81389092
1981	-65873861.1315636
1982	108640659.37296696
1983	-13121085.396337973
1984	-97492505.12635502
1985	40733382.244109005
1986	50822119.3941874
1987	49245256.222768664
1988	140675677.50002226
1989	4388600.561140887
1990	61337347.817448944
1991	133282804.4987725
1992	37401989.644552685
1993	-79812806.0558454
1994	57636400.107105725
1995	53891785.68700926
1996	88944939.6223179
1997	73157856.22549337
1998	114755142.48601083
1999	46955729.35360358
2000	5457556.272984526
2001	21392748.980163705
2002	42109619.45518736
2003	32424699.881320044
2004	-65991826.66195409
2005	48845123.77094339
2006	37329715.59348759
2007	6228144.587172607
2008	67255599.1984763
2009	3112950.188971705
2010	60453409.21920392
2011	4418050.01676546
2012	47992744.7301614
2013	12024710.510814238
2014	35393904.93706696
2015	-24228208.01492328
2016	53053834.12541577
2017	24631742.935908347
2018	63140288.67207215
2019	37903802.80836264
2020	22417153.80136805
2021	-145890937.4129754