Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	-582200000.00000000
1981-01-01	-1259800000.00000000
1982-01-01	3416000000.00000000
1983-01-01	-3135200000.00000000
1984-01-01	-3505400000.00000000
1985-01-01	2519200000.00000000
1986-01-01	-220600000.00000000
1987-01-01	-5276000000.00000000
1988-01-01	6340000000.00000000
1989-01-01	-520200000.00000006
1990-01-01	-3185200000.00000000
1991-01-01	-8010400000.00000000
1992-01-01	-1031800000.00000000
1993-01-01	-5898800000.00000000
1994-01-01	18394000000.00000000
1995-01-01	-10595700000.00000000
1996-01-01	-2489000000.00000000
1997-01-01	-9359200000.00000000
1998-01-01	-3014200000.00000000
1999-01-01	39900000.00000000
2000-01-01	-3759300000.00000000
2001-01-01	-9228500000.00000000
2002-01-01	-5831500000.00000000
2003-01-01	-8328000000.00000000
2004-01-01	-5163000000.00000000
2005-01-01	-9896100000.00000000
2006-01-01	-2192500000.00000000
2007-01-01	-10830600000.00000000
2008-01-01	-8066300000.00000000
2009-01-01	-4465500000.00000000
2010-01-01	-20536100000.00000000
2011-01-01	-27738500000.00000000
2012-01-01	-17206900000.00000000
2013-01-01	-22427500000.00000000
2014-01-01	-17175800000.00000000
2015-01-01	13248200000.00000000
2016-01-01	699700000.00000000