Year	current US$
1990	-718892528.936008
1991	-715999343.326602
1992	-385880720.392213
1993	-726240162.244833
1994	-408481731.68268
1995	-1196408009.19913
1996	-1376749107.17148
1997	-1142889762.2021
1998	-856811295.366664
1999	-901695152.640345
2000	-1131667877.25094
2001	-1152848200.90077
2002	-1145526287.3142
2003	-829591836.592756
2004	-1725133347.17158
2005	-1732344325.63879
2006	-1720777114.2683
2007	-2076434317.25764
2008	-2032592157.56547
2009	-1079568841.72913
2010	-434441661.711282
2011	-1906880829.02589
2012	667671663.49231
2013	2286876899.81556
2014	2794343769.08032
2015	431307187.491678
2016	-1329058212.83056
2019	-2167702616.08911
2020	-2982961849.07439