Year	US Dollars, Sum Over Component Sub-periods
1995-01-01	15368000000
1996-01-01	13825000000
1997-01-01	13831000000
1998-01-01	13237000000
1999-01-01	12923000000
2000-01-01	9368000000
2001-01-01	7895000000
2002-01-01	11325000000
2003-01-01	10668000000
2004-01-01	11514000000
2005-01-01	7447000000
2006-01-01	7444000000
2007-01-01	8700000000
2008-01-01	-6660000000
2009-01-01	-3024000000
2010-01-01	9070000000
2011-01-01	-5726000000
2012-01-01	-9375000000
2013-01-01	-9634000000