Year	current US$
1990	167619529.545538
1991	50730496.0847946
1992	-4408004.50525339
1993	-139964190.884717
1994	-11705243.6837192
1995	6677319.23267484
1996	-25140998.3180733
1997	-94956981.4525829
1998	-108948737.632708
1999	-77748574.4889812
2000	43556004.5972566
2001	18246587.4850834
2002	85900610.0291965
2003	90470003.6062172
2004	144584216.853069
2005	11896175.0341911
2006	56786078.2387496
2007	-65166182.2500599
2008	-63763995.2101821
2009	1368537.57491356
2010	-3251941.17947215
2011	-131379335.629133
2012	-348925384.13449
2013	-95275395.9369541
2014	95736216.3923535
2015	279149605.800771
2016	80209126.2786991
2017	286830762.658578
2018	375631136.859616
2019	709031518.355536
2020	930311930.243865