Year US Dollars, Sum Over Component Sub-periods 1990-01-01 2971800000.000000 1991-01-01 3323600000.000000 1992-01-01 5956700000.000000 1993-01-01 7064300000.000000 1994-01-01 8057000000.000000 1995-01-01 11944800000.000000 1996-01-01 13999200000.000000 1997-01-01 16765000000.000000 1998-01-01 19616300000.000000 1999-01-01 23621200000.000000 2000-01-01 25127700000.000000 2001-01-01 27308000000.000000 2002-01-01 33403199999.999996 2003-01-01 36835000000.000000 2004-01-01 39040200000.000000 2005-01-01 35071200000.000000 2006-01-01 31419700000.000000 2007-01-01 27120300000.000000 2008-01-01 34810800000.000000 2009-01-01 45105600000.000000 2010-01-01 47349600000.000000 2011-01-01 51005400000.000000 2012-01-01 46743800000.000000 2013-01-01 42717500000.000000