Year	US Dollars
1994	-891000000
1995	-953000000
1996	-1678999933.54599
1997	-1650984372.29687
1998	-2925335454.90709
1999	-3117542320.26144
2000	-2577347574.18747
2001	-2732719436.3104
2002	-3098270163.61886
2003	-4425994460.47317
2004	-4535683809.52381
2005	-4489476696.12768
2006	-3602078121.99346
2007	-4630871238.62841
2008	-6205283852.60635
2009	-4179541160.59379
2010	-3706256517.91156
2011	-4430807449.00135
2012	-4049411378.2683
2013	-3706845428.00896
2014	-4190846560.84656
2015	-3023599092.71336
2016	-2854996889.31622
2017	-2722835715.10891