Year US Dollars, Sum Over Component Sub-periods 1995-01-01 3199670000.0000000 1996-01-01 3538950000.0000000 1997-01-01 3994520000.0000000 1998-01-01 4247850000.0000005 1999-01-01 5404980000.0000000 2000-01-01 6808810000.0000000 2001-01-01 6435290000.0000000 2002-01-01 8119290000.0000000 2003-01-01 9948230000.0000000 2004-01-01 13006240000.0000000 2005-01-01 16224410000.0000000 2006-01-01 20835790000.0000000 2007-01-01 27219820000.0000000 2008-01-01 29174650000.0000000 2009-01-01 24453560000.0000000 2010-01-01 26192230000.0000000 2011-01-01 29440510000.0000000 2012-01-01 29988160000.0000000 2013-01-01 31701980000.0000000