Year	US Dollars, Sum Over Component Sub-periods
1990-01-01	4289910000
1991-01-01	4787520000
1992-01-01	6109830000
1993-01-01	5763280000
1994-01-01	7256710000
1995-01-01	9816510000
1996-01-01	11835780000
1997-01-01	13448920000
1998-01-01	23937540000
1999-01-01	27698730000
2000-01-01	32775900000
2001-01-01	37455520000
2002-01-01	42758920000
2003-01-01	54479220000
2004-01-01	65383870000
2005-01-01	71488460000
2006-01-01	80164710000
2007-01-01	94568620000
2008-01-01	110554020000
2009-01-01	103505080000
2010-01-01	107213690000
2011-01-01	115646230000
2012-01-01	111938700000
2013-01-01	117596280000