Year Percent 2000-01-01 75.5556 2001-01-01 97.5076 2002-01-01 80.1186 2003-01-01 73.6154 2004-01-01 68.9432 2005-01-01 59.8336 2006-01-01 57.6647 2007-01-01 49.1289 2008-01-01 39.4075 2009-01-01 49.1666 2010-01-01 49.5323 2011-01-01 43.2299 2012-01-01 45.9213 2013-01-01 48.1427 2014-01-01 39.0269 2015-01-01 38.6587 2016-01-01 41.7599