Year	US Dollars, Sum Over Component Sub-periods
1993-01-01	4722870000
1994-01-01	5155540000
1995-01-01	6717020000
1996-01-01	8178250000
1997-01-01	7165940000
1998-01-01	7642430000
1999-01-01	7050090000
2000-01-01	6853770000
2001-01-01	7091800000
2002-01-01	7061150000
2003-01-01	7769040000
2004-01-01	9616220000
2005-01-01	11857620000
2006-01-01	14154470000
2007-01-01	17283230000
2008-01-01	21774850000
2009-01-01	19307280000
2010-01-01	20930220000
2011-01-01	23176150000
2012-01-01	22817300000
2013-01-01	22418950000