Year Percent 2000-01-01 1.66874500 2001-01-01 1.27143825 2002-01-01 1.43846350 2003-01-01 1.79839950 2004-01-01 2.25552300 2005-01-01 2.38580700 2006-01-01 2.07864250 2007-01-01 1.77250075 2008-01-01 1.48776125 2009-01-01 1.73150725 2010-01-01 2.20240975 2011-01-01 2.15129750 2012-01-01 2.57256250 2013-01-01 3.09092750