Year US Dollars, Sum Over Component Sub-periods 2002-01-01 4239270000.0000005 2003-01-01 -4498770000.0000000 2004-01-01 9743470000.0000000 2005-01-01 1144540000.0000000 2006-01-01 8687250000.0000000 2007-01-01 13105330000.0000000 2008-01-01 -28786610000.0000000 2009-01-01 54541320000.0000000 2010-01-01 27691580000.0000000 2011-01-01 18435940000.0000000