Year	US Dollars, Sum Over Component Sub-periods
1987-01-01	-1480100000
1988-01-01	-149800000
1989-01-01	-1323700000
1990-01-01	-1304600000
1991-01-01	-1041500000
1992-01-01	-1527900000
1993-01-01	-1484900000
1994-01-01	-1667400000
1995-01-01	-2458700000
1996-01-01	-3263500000
1997-01-01	-3572800000
1998-01-01	-1575000000
1999-01-01	-2941200000
2000-01-01	-1815200000
2001-01-01	-438800000
2002-01-01	-1319700000
2003-01-01	-2047000000
2004-01-01	-4671900000
2005-01-01	-8101600000
2006-01-01	-7896100000
2007-01-01	-9244100000
2008-01-01	-10268900000
2009-01-01	-2564400000
2010-01-01	-3260400000
2011-01-01	-4663400000
2012-01-01	-6956000000
2013-01-01	-6245600000