Year	US Dollars, Sum Over Component Sub-periods
1996-01-01	6045630000
1997-01-01	7067520000
1998-01-01	7665140000
1999-01-01	11348920000
2000-01-01	12381060000
2001-01-01	12055850000
2002-01-01	10730350000
2003-01-01	10110520000
2004-01-01	15251340000
2005-01-01	19542580000
2006-01-01	20753340000
2007-01-01	22657590000
2008-01-01	31929020000
2009-01-01	26228440000
2010-01-01	23199340000
2011-01-01	16531960000
2012-01-01	4906460000
2013-01-01	-1395560000