Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	10473400000.0000000
1981-01-01	26783800000.0000000
1982-01-01	8273299999.9999990
1983-01-01	2352500000.0000000
1984-01-01	2102400000.0000000
1985-01-01	-327700000.0000000
1986-01-01	666800000.0000000
1987-01-01	1925200000.0000000
1988-01-01	-2569600000.0000000
1989-01-01	-381900000.0000000
1990-01-01	10772400000.0000000
1991-01-01	8270799999.9999990
1992-01-01	-1500000000.0000000
1993-01-01	2735700000.0000000
1994-01-01	1125900000.0000000
1995-01-01	22877700000.0000000
1996-01-01	-12085500000.0000000
1997-01-01	-7943700000.0000000
1998-01-01	4932400000.0000000
1999-01-01	-7264200000.0000000
2000-01-01	-3948700000.0000000
2001-01-01	-664400000.0000000
2002-01-01	-3183000000.0000000
2003-01-01	-91100000.0000000
2004-01-01	-1712000000.0000000
2005-01-01	3396500000.0000000
2006-01-01	423200000.0000000
2007-01-01	20966500000.0000000
2008-01-01	6649600000.0000000
2009-01-01	2362600000.0000000
2010-01-01	32095200000.0000000
2011-01-01	-2631400000.0000000
2012-01-01	-10043300000.0000000
2013-01-01	13405100000.0000000
2014-01-01	15242400000.0000000
2015-01-01	-2322400000.0000000
2016-01-01	2076199999.9999998