Year Percent 1998-01-01 46.2000 1999-01-01 66.6000 2000-01-01 66.6000 2001-01-01 66.6000 2002-01-01 89.6000 2003-01-01 84.0000 2004-01-01 104.5000 2005-01-01 131.4000 2006-01-01 175.2000 2007-01-01 205.2000 2008-01-01 48.4000 2009-01-01 46.1000 2010-01-01 39.0090 2011-01-01 38.7296 2012-01-01 41.1530 2013-01-01 30.1209 2014-01-01 36.9243