Year	current US$
1990	627973212.254422
1991	711696456.709286
1992	827956983.250737
1993	759071784.951393
1994	701708036.097104
1995	731813666.621111
1996	787746486.822885
1997	750320974.826884
1998	731764827.401099
1999	712667062.246412
2000	836933382.952171
2001	909475943.393271
2002	942707800.832904
2003	1072696007.4144
2004	1080097078.2602
2005	702506137.019316
2006	920347774.498225
2007	1414903287.55181
2008	1000996345.79867
2009	353087632.564637
2010	310673993.185243
2011	100754209.366525
2012	-61555275.4102142
2013	-96110423.8370019
2014	-119278036.961693
2015	45939352.0330009
2016	151262114.210238
2017	483802761.049421
2018	430510985.304133
2019	397323513.092456
2020	-360727003.994363
2021	19396809.5443245