Year	US Dollars, Sum Over Component Sub-periods
1995-01-01	14358000000
1996-01-01	12997000000
1997-01-01	12189000000
1998-01-01	12688000000
1999-01-01	12218000000
2000-01-01	11625000000
2001-01-01	10996000000
2002-01-01	11318000000
2003-01-01	13838000000
2004-01-01	17366000000
2005-01-01	19431000000
2006-01-01	22824000000
2007-01-01	29402000000
2008-01-01	33148000000
2009-01-01	23654000000
2010-01-01	26229000000
2011-01-01	31157000000
2012-01-01	28024000000
2013-01-01	28383000000