Year	US Dollars
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	-218626604.56812
1993	-78485992.1308
2000	2448972993.08063
2001	39505691.8383
2002	1452439915.27721
2003	907497088.04752
2004	3163246007.3688
2005	9142028772.66975
2006	17057626097.917
2007	18402200085.782
2008	21121847070.7711
2009	-378213548.27162
2010	16030507356.9974
2011	24144193632.1789
2012	26037164285.415
2013	20371825861.00249
2014	7313310763.52154
2015	-3519977811.22382
2016	571898719.63612
2017	2837915376.35355