Year US Dollars, Sum Over Component Sub-periods 1990-01-01 2971840000.000000 1991-01-01 3323590000.000000 1992-01-01 5956700000.000000 1993-01-01 7064330000.000000 1994-01-01 8057040000.000000 1995-01-01 11944750000.000000 1996-01-01 13999230000.000000 1997-01-01 16764960000.000000 1998-01-01 19616320000.000000 1999-01-01 23621220000.000000 2000-01-01 25127730000.000000 2001-01-01 27308030000.000000 2002-01-01 33403230000.000004 2003-01-01 36835010000.000000 2004-01-01 39040230000.000000 2005-01-01 35071240000.000000 2006-01-01 31419720000.000000 2007-01-01 27120320000.000000 2008-01-01 34810840000.000000 2009-01-01 45105560000.000000 2010-01-01 47349590000.000000 2011-01-01 51005430000.000000 2012-01-01 46743840000.000000 2013-01-01 42717510000.000000