Year	US Dollars, Sum Over Component Sub-periods
1995-01-01	10259800000
1996-01-01	9865200000
1997-01-01	9782500000
1998-01-01	10858300000
1999-01-01	11159700000
2000-01-01	11018400000
2001-01-01	11508000000
2002-01-01	11571400000
2003-01-01	13933000000
2004-01-01	17066700000
2005-01-01	18859600000
2006-01-01	20800000000
2007-01-01	23169900000
2008-01-01	27892900000
2009-01-01	20008300000
2010-01-01	21946900000
2011-01-01	26780500000
2012-01-01	24691500000
2013-01-01	25581900000