Year Number 2005-01-01 20.6904 2006-01-01 34.6291 2007-01-01 60.1484 2008-01-01 78.3526 2009-01-01 69.0816 2010-01-01 82.1723 2011-01-01 110.8580 2012-01-01 152.7872 2013-01-01 237.4981 2014-01-01 291.0706