Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	2729000000
1981-01-01	2695000000
1982-01-01	2192000000
1983-01-01	2439000000
1984-01-01	3010000000
1985-01-01	4735000000
1986-01-01	4901000000
1987-01-01	4146000000
1988-01-01	4049000000
1989-01-01	4075000000
1990-01-01	5061000000
1991-01-01	5733000000
1992-01-01	5678000000
1993-01-01	5607000000
1994-01-01	5600000000
1995-01-01	5673000000
1996-01-01	6136000000
1997-01-01	6080000000
1998-01-01	6076000000
1999-01-01	6273000000
2000-01-01	6470000000
2001-01-01	6658000000
2002-01-01	6785000000
2003-01-01	6411000000
2004-01-01	6275000000
2005-01-01	5948000000
2006-01-01	7507000000
2007-01-01	7326000000
2008-01-01	8455000000
2009-01-01	7226000000
2010-01-01	8235000000
2011-01-01	8777000000
2012-01-01	8173000000
2013-01-01	9067000000
2014-01-01	10130000000