Year	US Dollars, Sum Over Component Sub-periods
1984-01-01	-1503000000
1985-01-01	-1553000000
1986-01-01	-1877000000
1987-01-01	-2085000000
1988-01-01	-2513000000
1989-01-01	-2327000000
1990-01-01	-2508000000
1991-01-01	-2663000000
1992-01-01	-2625000000
1993-01-01	-2744000000
1994-01-01	-3264000000
1995-01-01	-3205000000
1996-01-01	-2927000000
1997-01-01	-3013000000
1998-01-01	-2985000000
1999-01-01	-3537000000
2000-01-01	-4002000000
2001-01-01	-5000000000
2002-01-01	-4554000000
2003-01-01	-5557000000
2004-01-01	-5609000000
2005-01-01	-5839000000
2006-01-01	-6656000000
2007-01-01	-7108000000
2008-01-01	-8367000000
2009-01-01	-8308000000
2010-01-01	-7214000000
2011-01-01	-7855000000
2012-01-01	-7161000000
2013-01-01	-9354000000