Year	US Dollars
1995	-1854216716.37226
1996	-1546052924.07346
1997	-3075079781.19014
1998	-1727322285.60653
1999	-1415642603.03444
2000	-663431496.67178
2001	-819779404.1839
2002	-2116959068.56206
2003	-2578189127.51678
2004	-2501193046.41798
2005	-2787030928.5282
2006	-3400159686.76102
2007	-4367238836.58059
2008	-5666812690.04662
2009	-2329532235.75773
2010	-252232557.29356
2011	-287651041.37428
2012	267275319.2144
2013	267538151.4137
2014	1105543491.87571
2015	1172145502.52978
2016	1446991786.65883
2017	1187062577.37251