Year	US Dollars
1990	-279903671.75573
1991	-1140067340.06734
1992	-1260473479.17291
1993	-1376249228.87107
1994	-695071207.43034
1995	-834029090.31145
1996	-516483345.03471
1997	-602743297.80487
1998	-1304189360.33927
1999	-177672441.85001
2000	711064940.20455
2001	88829206.9816
2002	-77859074.7331
2003	-177210980.76839
2004	127402909.46876
2005	841097973.36107
2006	84136347.67358
2007	-1584512546.41165
2008	-1499152500.79844
2009	-2870147751.9723
2010	-1358499931.69088
2011	-778433115.0608
2012	-4118663769.18852
2013	-3149499744.0551
2014	-2969440178.69608
2015	-4792689282.88892
2016	-4803821428.57143