Year	current US$
1990	-657518806.156568
1991	-658524091.664311
1992	-325811504.459807
1993	-671415804.569426
1994	-369867623.730803
1995	-1152790286.85634
1996	-1327052582.82314
1997	-1100769847.12527
1998	-821932966.400874
1999	-857298165.42304
2000	-1075783823.92018
2001	-1107391060.30266
2002	-1098764170.82395
2003	-775712265.408796
2004	-1655365966.46572
2005	-1638539175.7809
2006	-1613951610.6012
2007	-1951933290.47802
2008	-1877322400.04664
2009	-962977343.440658
2010	-291005764.692737
2011	-1739872107.88104
2012	844097972.887912
2013	2470812255.3181
2014	2968652677.6423
2015	549679211.148543
2016	-1219601295.30981
2019	-2045317927.11599
2020	-2884289315.36193