Year	US Dollars
2000-01-01	-2995600000
2001-01-01	-3418100000
2002-01-01	-2746000000
2003-01-01	-2664500000
2004-01-01	-3332000000
2005-01-01	-2926300000
2006-01-01	-1482100000
2007-01-01	-1739700000
2008-01-01	-2880200000
2009-01-01	-3750500000
2010-01-01	-7747300000
2011-01-01	-6097400000
2012-01-01	-11254900000
2013-01-01	-13578900000
2014-01-01	-14940200000
2015-01-01	-9717900000
2016-01-01	-11577300000
2017-01-01	-12881800000
2018-01-01	-13858800000
2019-01-01	-14235500000