Year	US Dollars, Sum Over Component Sub-periods
1992-01-01	7399000000
1993-01-01	7293000000
1994-01-01	8971000000
1995-01-01	9404000000
1996-01-01	11130000000
1997-01-01	10040000000
1998-01-01	10320000000
1999-01-01	13001000000
2000-01-01	12421000000
2001-01-01	12389000000
2002-01-01	14213000000
2003-01-01	16521000000
2004-01-01	20170000000
2005-01-01	25806000000
2006-01-01	30736000000
2007-01-01	42673000000
2008-01-01	44472000000
2009-01-01	34632000000
2010-01-01	39221000000
2011-01-01	49236000000
2012-01-01	39213000000
2013-01-01	37015000000