Year	US Dollars, Sum Over Component Sub-periods
1994-01-01	1252000000
1995-01-01	958000000
1996-01-01	1694000000
1997-01-01	2035000000
1998-01-01	2897000000
1999-01-01	2214000000
2000-01-01	1292000000
2001-01-01	1544000000
2002-01-01	1991000000
2003-01-01	2470000000
2004-01-01	1061000000
2005-01-01	1958000000
2006-01-01	3237000000
2007-01-01	4194000000
2008-01-01	3578000000
2009-01-01	2218000000
2010-01-01	3762000000
2011-01-01	6159000000
2012-01-01	5139000000
2013-01-01	5063000000