Year US Dollars, Sum Over Component Sub-periods 1995-01-01 1497230000 1996-01-01 13278410000 1997-01-01 31881180000 1998-01-01 27340840000 1999-01-01 5079550000 2000-01-01 6023640000 2001-01-01 340550000 2002-01-01 10129840000 2003-01-01 13262300000 2004-01-01 40427930000 2005-01-01 74099310000 2006-01-01 113425200000 2007-01-01 168596850000 2008-01-01 183473880000 2009-01-01 179731930000 2010-01-01 214574610000 2011-01-01 285587200000 2012-01-01 297897610000 2013-01-01 347377900000