Year US Dollars, Sum Over Component Sub-periods 1996-01-01 -4918230000.0000000 1997-01-01 -6779350000.0000000 1998-01-01 -8746420000.0000000 1999-01-01 -10986940000.0000000 2000-01-01 -12135260000.0000000 2001-01-01 -12429050000.0000000 2002-01-01 -10908010000.0000000 2003-01-01 -10427680000.0000000 2004-01-01 -15446790000.0000000 2005-01-01 -19791220000.0000000 2006-01-01 -21572710000.0000000 2007-01-01 -23416030000.0000000 2008-01-01 -31778580000.0000000 2009-01-01 -25565760000.0000000 2010-01-01 -24226780000.0000000 2011-01-01 -16695029999.9999980 2012-01-01 -4282149999.9999995 2013-01-01 1169460000.0000000