Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	51000000
1981-01-01	114000000
1982-01-01	21000000
1983-01-01	79000000
1984-01-01	90000000
1985-01-01	112000000
1986-01-01	143000000
1987-01-01	224000000
1988-01-01	267000000
1989-01-01	160000000
1990-01-01	151000000
1991-01-01	346000000
1992-01-01	589000000
1993-01-01	605000000
1994-01-01	442000000
1995-01-01	1351000000
1996-01-01	1398000000
1997-01-01	1635000000
1998-01-01	1738000000
1999-01-01	4151000000
2000-01-01	8048000000
2001-01-01	1772000000
2002-01-01	1583000000
2003-01-01	3323000000
2004-01-01	2947000000
2005-01-01	4819000000
2006-01-01	15296000000
2007-01-01	8798000000
2008-01-01	10875000000
2009-01-01	4438000000
2010-01-01	5510000000
2011-01-01	9095000000
2012-01-01	8055000000
2013-01-01	11804000000
2014-01-01	6432000000