Year Percent 1996-01-01 44.3637 1997-01-01 44.5198 1998-01-01 83.8240 1999-01-01 92.8258 2000-01-01 100.0000 2001-01-01 100.0000 2002-01-01 100.0000 2003-01-01 100.0000 2004-01-01 100.0000 2005-01-01 100.0000 2006-01-01 100.0000 2007-01-01 100.0000 2008-01-01 100.0000 2009-01-01 55.6693 2010-01-01 51.7570 2011-01-01 50.5735 2012-01-01 50.4182 2013-01-01 49.8423 2014-01-01 50.1359 2015-01-01 61.1374 2016-01-01 53.0845