Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	-17000000.0000000
1981-01-01	165000000.0000000
1982-01-01	275000000.0000000
1983-01-01	-134000000.0000000
1984-01-01	-320000000.0000000
1985-01-01	-389000000.0000000
1986-01-01	-709000000.0000000
1987-01-01	-397000000.0000000
1988-01-01	-693500000.0000000
1989-01-01	-56000000.0000000
1990-01-01	-7354000000.0000000
1991-01-01	-604300000.0000000
1992-01-01	1165200000.0000000
1993-01-01	-564300000.0000000
1994-01-01	-615100000.0000000
1995-01-01	-3917800000.0000000
1996-01-01	338200000.0000000
1997-01-01	1969700000.0000000
1998-01-01	-53700000.0000000
1999-01-01	-1392700000.0000000
2000-01-01	3136800000.0000000
2001-01-01	2081000000.0000000
2002-01-01	1771100000.0000000
2003-01-01	1214600000.0000000
2004-01-01	-1754000000.0000000
2005-01-01	-20547700000.0000000
2006-01-01	-1728900000.0000000
2007-01-01	-14739300000.0000000
2008-01-01	12660800000.0000000
2009-01-01	-30269300000.0000000
2010-01-01	-5902800000.0000000
2011-01-01	5323500000.0000000
2012-01-01	-8493700000.0000010
2013-01-01	-2086300000.0000002
2014-01-01	-734100000.0000000
2015-01-01	7595600000.0000000
2016-01-01	2062199999.9999998