Year US Dollars, Sum Over Component Sub-periods 1995-01-01 148768000000 1996-01-01 150018000000 1997-01-01 144006000000 1998-01-01 148295000000 1999-01-01 147795000000 2000-01-01 155894000000 2001-01-01 153937000000 2002-01-01 145690000000 2003-01-01 175721000000 2004-01-01 211363000000 2005-01-01 236354000000 2006-01-01 257621000000 2007-01-01 297127000000 2008-01-01 342149000000 2009-01-01 259553000000 2010-01-01 283980000000 2011-01-01 347525000000 2012-01-01 325780000000 2013-01-01 339794000000