Year	US Dollars, Sum Over Component Sub-periods
1992-01-01	8793000000
1993-01-01	8796000000
1994-01-01	9358000000
1995-01-01	11463000000
1996-01-01	11736000000
1997-01-01	11352000000
1998-01-01	12074000000
1999-01-01	15780000000
2000-01-01	14666000000
2001-01-01	15362000000
2002-01-01	15665000000
2003-01-01	17630000000
2004-01-01	21421000000
2005-01-01	27930000000
2006-01-01	32719000000
2007-01-01	45084000000
2008-01-01	42101000000
2009-01-01	36192000000
2010-01-01	37227000000
2011-01-01	48262000000
2012-01-01	38196000000
2013-01-01	37963000000