Year	US Dollars
1995	-274522247.57558
1996	-538259315.97754
1997	-590058069.19913
1998	-865734540.68867
1999	-738938265.67379
2000	-634044032.44496
2001	-866922990.82158
2002	-967862664.84766
2003	-1473640388.63608
2004	-2235135943.80122
2005	-2450816428.12694
2006	-4433535239.52847
2007	-5877769115.03214
2008	-4597845344.24792
2009	-424124270.22519
2010	-350263913.82796
2011	-1404930310.76007
2012	-1250449699.48783
2013	-1073965530.12352
2014	-452929651.62438
2015	-137650714.16146
2016	247204995.79113
2017	-402235786.93669