Year	US Dollars, Sum Over Component Sub-periods
1992-01-01	11312000000
1993-01-01	7546000000
1994-01-01	10046000000
1995-01-01	5066000000
1996-01-01	4571000000
1997-01-01	3954000000
1998-01-01	5190000000
1999-01-01	6109000000
2000-01-01	6514000000
2001-01-01	6349000000
2002-01-01	7269000000
2003-01-01	8880000000
2004-01-01	10014000000
2005-01-01	11663000000
2006-01-01	12199000000
2007-01-01	15282000000
2008-01-01	20831000000
2009-01-01	17615000000
2010-01-01	17451000000
2011-01-01	18957000000
2012-01-01	18118000000
2013-01-01	20450000000