Year	US Dollars
1995	-1172711864.40678
1996	-2525214152.70019
1997	-3434382558.39521
1998	-1684352195.23867
1999	-1224730952.27887
2000	-291945495.90839
2001	-1876919076.36254
2002	-2913948039.00103
2003	-3726696350.11652
2004	-6566882603.02082
2005	-5249963275.96389
2006	-6223552329.40854
2007	-9790193914.82118
2008	-12325706389.5843
2009	-6775260947.66841
2010	-5914677809.66925
2011	-7154675768.47657
2012	-6791058196.06631
2013	-4874671936.81459
2014	-4795572211.16834
2015	-3624132214.08786
2016	-2854089626.06232
2017	-3650167178.76667