Year Percent 1994-01-01 51.1296 1995-01-01 52.0791 1996-01-01 56.3900 1997-01-01 64.7294 1998-01-01 61.3189 1999-01-01 65.3055 2000-01-01 60.8944 2001-01-01 68.3959 2002-01-01 71.7004 2003-01-01 81.0605 2004-01-01 90.5755 2005-01-01 95.5022 2006-01-01 102.0000 2007-01-01 110.7280 2008-01-01 125.2950 2009-01-01 141.9640 2010-01-01 155.6120 2011-01-01 137.9060 2012-01-01 96.2443 2013-01-01 81.3796 2014-01-01 83.2269 2015-01-01 77.7179 2016-01-01 71.2482