Year	US Dollars, Sum Over Component Sub-periods
1987-01-01	-1480120000
1988-01-01	-149750000
1989-01-01	-1323730000
1990-01-01	-1304580000
1991-01-01	-1041500000
1992-01-01	-1527920000
1993-01-01	-1484860000
1994-01-01	-1667360000
1995-01-01	-2458730000
1996-01-01	-3263540000
1997-01-01	-3572790000
1998-01-01	-1575040000
1999-01-01	-2941220000
2000-01-01	-1815220000
2001-01-01	-438760000
2002-01-01	-1319730000
2003-01-01	-2046980000
2004-01-01	-4671930000
2005-01-01	-8101640000
2006-01-01	-7896150000
2007-01-01	-9244120000
2008-01-01	-10268860000
2009-01-01	-2564360000
2010-01-01	-3260380000
2011-01-01	-4663440000
2012-01-01	-6956040000
2013-01-01	-6245550000