Year	US Dollars, Sum Over Component Sub-periods
1988-01-01	-5482800000.000000
1989-01-01	-7347880000.000000
1990-01-01	-14628140000.000000
1991-01-01	-17636780000.000000
1992-01-01	-21969490000.000000
1993-01-01	-17216850000.000000
1994-01-01	-16709660000.000000
1995-01-01	-14102730000.000000
1996-01-01	-14809590000.000000
1997-01-01	-11204190000.000000
1998-01-01	-12338680000.000000
1999-01-01	-11056260000.000000
2000-01-01	-12068060000.000000
2001-01-01	-10417940000.000000
2002-01-01	-14519370000.000000
2003-01-01	-20121710000.000000
2004-01-01	-18405640000.000000
2005-01-01	-16928500000.000000
2006-01-01	-17039099999.999998
2007-01-01	-26816410000.000000
2008-01-01	-28296050000.000000
2009-01-01	-14406610000.000000
2010-01-01	-10750040000.000000
2011-01-01	-11818430000.000000
2012-01-01	-8660610000.000000
2013-01-01	-13055850000.000000