Year	US Dollars, Sum Over Component Sub-periods
1994-01-01	-7011000000
1995-01-01	-9638000000
1996-01-01	-5383000000
1997-01-01	-5945000000
1998-01-01	-4083000000
1999-01-01	-4284000000
2000-01-01	-6665000000
2001-01-01	-9131000000
2002-01-01	-9886000000
2003-01-01	-10894000000
2004-01-01	-12693000000
2005-01-01	-13775000000
2006-01-01	-13614000000
2007-01-01	-18888000000
2008-01-01	-24289000000
2009-01-01	-19836000000
2010-01-01	-28702000000
2011-01-01	-35947000000