Year	US Dollars, Sum Over Component Sub-periods
1996-01-01	2402000000
1997-01-01	1675210000
1998-01-01	1718150000
1999-01-01	1285080000
2000-01-01	838670000
2001-01-01	1094290000
2002-01-01	49120000
2003-01-01	-1171640000
2004-01-01	71300000
2005-01-01	1514220000
2006-01-01	1816180000
2007-01-01	1838200000
2008-01-01	2263600000
2009-01-01	2801080000
2010-01-01	3796830000
2011-01-01	4449250000
2012-01-01	4310850000
2013-01-01	4636450000