Year	US Dollars
2000-01-01	-26700000
2001-01-01	7100000
2002-01-01	14500000
2003-01-01	21300000
2004-01-01	-8700000
2005-01-01	-22700000
2006-01-01	-88700000
2007-01-01	-152000000
2008-01-01	-212700000
2009-01-01	-66900000
2010-01-01	31100000
2011-01-01	-162500000
2012-01-01	-254100000
2013-01-01	-339000000
2014-01-01	-398700000
2015-01-01	-548800000
2016-01-01	-573300000
2017-01-01	-471200000
2018-01-01	-426100000
2019-01-01	-446400000