Year Number 2004-01-01 121.715452784107 2005-01-01 149.267221265219 2006-01-01 179.783929227585 2007-01-01 173.068786468766 2008-01-01 193.046876960716 2009-01-01 194.072395209204 2010-01-01 201.396477196589 2011-01-01 196.900246985264 2012-01-01 180.327402914101 2013-01-01 176.433932494948 2014-01-01 174.354821817831