Year Percent 2005-01-01 167.0000 2006-01-01 131.8000 2007-01-01 193.0000 2008-01-01 2.0000 2009-01-01 63.7000 2010-01-01 58.1959 2011-01-01 69.5589 2012-01-01 72.0734 2013-01-01 53.4403 2014-01-01 65.6333 2015-01-01 61.3644 2016-01-01 55.1902