Year	US Dollars
2000-01-01	-837300000
2001-01-01	-1025600000
2002-01-01	-747200000
2003-01-01	-735500000
2004-01-01	-767200000
2005-01-01	-302800000
2006-01-01	-631800000
2007-01-01	-916800000
2008-01-01	-1711200000
2009-01-01	-1240900000
2010-01-01	-2117200000
2011-01-01	-3402500000
2012-01-01	-3738400000
2013-01-01	-3878800000
2014-01-01	-4340800000
2015-01-01	-3849000000
2016-01-01	-3694200000
2017-01-01	-4048400000
2018-01-01	-3688800000
2019-01-01	-3273000000