Year	current US$
1990	-352894908.071871
1991	-148286628.529346
1992	-732776369.083087
1993	223016477.057293
1994	-72253245.8531971
1995	135966504.969353
1996	-241166726.794185
1997	-119831561.661906
1998	197064873.458398
1999	152654453.04622
2000	-396573373.477249
2001	-382437973.207516
2002	-406716191.357274
2003	-84858805.7222764
2004	479319482.664838
2005	67667699.9268095
2006	281486085.354647
2007	145920612.627327
2008	-803130788.284628
2009	-439565015.449265
2010	-1080922704.06833
2011	-1535700433.59918
2012	-1740078727.61675
2013	-1339537856.04152
2014	-851522415.667352
2015	-980770780.844333
2016	-72096376.4760776
2017	-207755548.769583
2018	-365395680.452035
2019	-650499670.776469
2020	-690848820.932884
2021	-712900502.160346