Year	US Dollars, Sum Over Component Sub-periods
1984-01-01	2082000000
1985-01-01	1984000000
1986-01-01	1924000000
1987-01-01	2390000000
1988-01-01	2159000000
1989-01-01	3535000000
1990-01-01	4493000000
1991-01-01	5099000000
1992-01-01	3920000000
1993-01-01	3652000000
1994-01-01	3010000000
1995-01-01	4398000000
1996-01-01	4097000000
1997-01-01	4511000000
1998-01-01	5505000000
1999-01-01	4881000000
2000-01-01	4764000000
2001-01-01	2987000000
2002-01-01	2433000000
2003-01-01	1020000000
2004-01-01	1117000000
2005-01-01	1454000000
2006-01-01	1893000000
2007-01-01	2225000000
2008-01-01	2132000000
2009-01-01	2409000000
2010-01-01	1523000000
2011-01-01	1758000000
2012-01-01	1433000000
2013-01-01	1181000000