Year Percent 1994-01-01 0.4864250000000000 1995-01-01 0.6587029999999999 1996-01-01 0.8847690000000000 1997-01-01 1.3381600000000000 1998-01-01 1.6351100000000000 1999-01-01 1.6414300000000000 2000-01-01 1.6533600000000000 2001-01-01 1.5018400000000000 2002-01-01 1.3939800000000000 2003-01-01 1.4725500000000000 2004-01-01 1.2929200000000000 2005-01-01 1.1940300000000000 2006-01-01 1.2406900000000000 2007-01-01 1.4270500000000000 2008-01-01 1.4608600000000000 2009-01-01 1.1683800000000000 2010-01-01 1.0204100000000000 2011-01-01 0.7637380000000000 2012-01-01 0.7900300000000000 2013-01-01 0.7585800000000000 2014-01-01 0.7980600000000000 2015-01-01 0.6810680000000000 2016-01-01 0.8028830000000000