Year	US Dollars
1991	-275918854.61966
1992	-70952144.81132
1993	-2864089854.48288
1994	-2426069037.12554
1995	15081528.54792
1996	235615968.11461
1997	471103254.36374
1998	-738151796.37102
1999	-1322481781.25018
2000	-1719956680.01043
2001	-661034076.53039
2002	-1359421833.19612
2003	-3350746990.61597
2004	-4071783484.54074
2005	-2548745506.24428
2006	-1254726935.69086
2007	961978109.82988
2008	586125534.74949
2009	5275220085.62743
2010	6946994585.88643
2011	8590564770.83385
2012	8547194076.81628
2013	9431390956.43622
2014	8946436325.33443
2015	10886216247.6618
2016	12683602306.4992
2017	10879975707.5185