Year Number 2005-01-01 155.348596169981 2006-01-01 149.036995487654 2007-01-01 159.646992708843 2008-01-01 166.027472391504 2009-01-01 177.919612914647 2010-01-01 177.752567606895 2011-01-01 177.731839356228 2012-01-01 197.241223295077 2013-01-01 261.640814359259 2014-01-01 294.510564461135