Year Percent 2002-01-01 45.2000 2003-01-01 149.5000 2004-01-01 199.4000 2005-01-01 55.6000 2006-01-01 158.1000 2007-01-01 61.9000 2008-01-01 67.6000 2009-01-01 72.0000 2010-01-01 67.1631 2011-01-01 70.8740 2012-01-01 59.0534 2013-01-01 59.0841 2014-01-01 57.5416 2015-01-01 55.7144 2016-01-01 56.1159