Year Percent 2000-01-01 1.52356950 2001-01-01 1.17339025 2002-01-01 1.44987475 2003-01-01 1.93593000 2004-01-01 2.40149000 2005-01-01 2.49660550 2006-01-01 2.07969025 2007-01-01 1.71740725 2008-01-01 1.50095375 2009-01-01 1.87212300 2010-01-01 2.38448550 2011-01-01 2.36959300 2012-01-01 2.83802375 2013-01-01 3.60999375