Year US Dollars, Sum Over Component Sub-periods 1995-01-01 19522000000 1996-01-01 21249000000 1997-01-01 22677000000 1998-01-01 22680000000 1999-01-01 25462000000 2000-01-01 30971000000 2001-01-01 28174000000 2002-01-01 27644000000 2003-01-01 30349000000 2004-01-01 37018000000 2005-01-01 40489000000 2006-01-01 43026000000 2007-01-01 50757000000 2008-01-01 57985000000 2009-01-01 46327000000 2010-01-01 56610000000 2011-01-01 64778000000 2012-01-01 61825000000 2013-01-01 62213000000 2014-01-01 62520000000