Year	US Dollars
1993	-155418629.267
1994	-410175539.28359
1995	-328031943.35169
1996	-498652750.68279
1997	-530215171.32552
1998	-542984091.66759
1999	-252397040.03407
2000	-184292085.13775
2001	-247250828.03688
2002	-545705566.54422
2003	-834580849.14182
2004	-949818136.64596
2005	-714984579.03246
2006	-1720846066.99285
2007	-1973379140.43252
2008	-950212831.40472
2009	974719922.20061
2010	1238904117.60887
2011	1327539202.93027
2012	357305006.09947
2013	706771706.20745
2014	741695505.79122
2015	903204021.3049
2016	900813779.04678
2017	1163255465.31956