Year	US Dollars, Sum Over Component Sub-periods
1979-01-01	-197600000
1980-01-01	-366500000
1981-01-01	-207200000
1982-01-01	-375700000
1983-01-01	-188300000
1984-01-01	-42000000
1985-01-01	-81100000
1986-01-01	-143600000
1987-01-01	-138340000
1988-01-01	-175500000
1989-01-01	-523100000
1990-01-01	-624600000
1991-01-01	-1015000000
1992-01-01	-136700000
1993-01-01	-492300000
1994-01-01	-689900000
1995-01-01	-1095640000
1996-01-01	469060000
1997-01-01	-1115560000
1998-01-01	-2854010000
1999-01-01	-1690410000
2000-01-01	-2281590000
2001-01-01	2257590000
2002-01-01	-2482110000
2003-01-01	-249300000
2004-01-01	-9806990000
2005-01-01	-2516700000
2006-01-01	-28202490000
2007-01-01	-7066660000
2008-01-01	-20457070000
2009-01-01	10084230000
2010-01-01	-11587570000
2011-01-01	1029000000
2012-01-01	2821400000
2013-01-01	3495110000
2014-01-01	3540070000