Year Percent 2000-01-01 137.23 2001-01-01 175.79 2002-01-01 195.48 2003-01-01 219.40 2004-01-01 241.19 2005-01-01 258.09 2006-01-01 368.42 2007-01-01 352.48 2008-01-01 261.97 2009-01-01 364.17 2010-01-01 559.73 2011-01-01 569.60 2012-01-01 715.16 2013-01-01 770.73 2014-01-01 776.43 2015-01-01 706.23 2016-01-01 720.93