Year Number 2004-01-01 170.4211 2005-01-01 195.0054 2006-01-01 319.8257 2007-01-01 236.2485 2008-01-01 234.4782 2009-01-01 324.5141 2010-01-01 365.1151 2011-01-01 408.9988 2012-01-01 549.1991 2013-01-01 698.4377