Year	US Dollars, Sum Over Component Sub-periods
1996-01-01	-9846960000
1997-01-01	-10664700000
1998-01-01	-13215140000
1999-01-01	-15115900000
2000-01-01	-15143690000
2001-01-01	-14912860000
2002-01-01	-13916530000
2003-01-01	-15184590000
2004-01-01	-20306160000
2005-01-01	-22651720000
2006-01-01	-23103090000
2007-01-01	-26292570000
2008-01-01	-33604970000
2009-01-01	-24720920000
2010-01-01	-25409320000
2011-01-01	-19752550000
2012-01-01	-11356400000
2013-01-01	-9398550000