Year Percent 1998-01-01 2.3310400000000002 1999-01-01 2.3310400000000002 2000-01-01 2.3310400000000002 2001-01-01 2.3310400000000002 2002-01-01 2.3310400000000002 2003-01-01 2.3310400000000002 2004-01-01 2.3310400000000002 2005-01-01 2.3310400000000002 2006-01-01 2.3310400000000002 2007-01-01 2.3310400000000002 2008-01-01 2.3310400000000002 2009-01-01 2.3310400000000002 2010-01-01 2.3310400000000002 2011-01-01 2.3310400000000002 2012-01-01 2.3310400000000002 2013-01-01 2.3310400000000002 2014-01-01 9.1717100000000010