Year	US Dollars, Sum Over Component Sub-periods
1996-01-01	-4918200000
1997-01-01	-6779400000
1998-01-01	-8746400000
1999-01-01	-10986900000
2000-01-01	-12135300000
2001-01-01	-12429000000
2002-01-01	-10908000000
2003-01-01	-10427700000
2004-01-01	-15446800000
2005-01-01	-19791200000
2006-01-01	-21572700000
2007-01-01	-23416000000
2008-01-01	-31778600000
2009-01-01	-25565800000
2010-01-01	-24226800000
2011-01-01	-16695000000
2012-01-01	-4282200000
2013-01-01	1169500000