Year	current US$
1990	231798781.278673
1991	186981230.104549
1992	222230133.776818
1993	211980189.515684
1994	263195864.671077
1995	109628739.836741
1996	155261979.611704
1997	139491459.639822
1998	188480380.709947
1999	131040376.440652
2000	127845424.406767
2001	87377332.2327868
2002	120333516.01483
2003	203238897.84899
2004	64901453.8310958
2005	-76871920.9798768
2006	71586677.7080099
2007	315814357.259775
2008	51328593.3066533
2009	-35411344.3418035
2010	8773300.68889683
2011	-246762979.047617
2012	-146457969.357612
2013	-53874075.8334465
2014	-63345420.7984877
2015	-81838425.9955173
2016	-232268026.827999
2017	-130896973.057476