Year Number 2004-01-01 97.74672737 2005-01-01 97.75248025 2006-01-01 97.77385918 2007-01-01 97.79469442 2008-01-01 97.76219891 2009-01-01 97.67651115 2010-01-01 97.66517934 2011-01-01 97.63074079 2012-01-01 97.54623594 2013-01-01 97.46144797 2014-01-01 97.45249319