Year	US Dollars
1995	-836480486.56868
1996	-779269054.81226
1997	-1019707034.959
1998	-1281657401.81269
1999	-1095532412.6025
2000	-713467328.44195
2001	-669586793.26716
2002	-810391471.77609
2003	-1088013761.98534
2004	-1593931693.98907
2005	-1889522950.61575
2006	-3101271050.31999
2007	-5215561986.86371
2008	-5536981121.03029
2009	-629072004.44815
2010	-696930028.62045
2011	-1108849759.5562
2012	368579286.11934
2013	580551907.93474
2014	1007686913.90752
2015	-199064288.86736
2016	552960150.0479
2017	950120070.16992