Year US Dollars, Sum Over Component Sub-periods 1994-01-01 7436500000.000000 1995-01-01 8692800000.000000 1996-01-01 12956400000.000000 1997-01-01 11586900000.000000 1998-01-01 2060400000.000000 1999-01-01 10702600000.000000 2000-01-01 26073900000.000000 2001-01-01 26413100000.000000 2002-01-01 24113300000.000000 2003-01-01 28118700000.000000 2004-01-01 34047699999.999996 2005-01-01 49165700000.000000 2006-01-01 58729100000.000000 2007-01-01 57087600000.000000 2008-01-01 83007800000.000000 2009-01-01 48547400000.000000 2010-01-01 53562800000.000000 2011-01-01 73813100000.000000 2012-01-01 76429100000.000000 2013-01-01 64821700000.000000