Year US Dollars, Sum Over Component Sub-periods 1990-01-01 0 1991-01-01 0 1992-01-01 0 1993-01-01 0 1994-01-01 0 1995-01-01 0 1996-01-01 0 1997-01-01 0 1998-01-01 0 1999-01-01 0 2000-01-01 0 2001-01-01 0 2002-01-01 0 2003-01-01 0 2004-01-01 0 2005-01-01 0 2006-01-01 0 2007-01-01 0 2008-01-01 0 2009-01-01 0 2010-01-01 0 2011-01-01 0 2012-01-01 0 2013-01-01 0