Year	US Dollars, Sum Over Component Sub-periods
1994-01-01	-2563000000
1995-01-01	-1995000000
1996-01-01	-1075000000
1997-01-01	-1129000000
1998-01-01	-1178000000
1999-01-01	-1010000000
2000-01-01	-731000000
2001-01-01	-614000000
2002-01-01	-1061000000
2003-01-01	-2461000000
2004-01-01	-8437000000
2005-01-01	-6843000000
2006-01-01	-9748000000
2007-01-01	-16387000000
2008-01-01	-12882000000
2009-01-01	-16551000000
2010-01-01	-19080000000
2011-01-01	-23555000000
2012-01-01	-22670000000
2013-01-01	-22182000000