Year Percent 2000 47.77267 2001 47.77267 2002 47.51146 2003 47.24382 2004 46.96977 2005 46.68931 2006 46.40242 2007 46.10913 2008 45.80941 2009 45.50328 2010 45.19074 2011 44.87178 2012 44.5464 2013 44.21461 2014 43.8764 2015 43.53178 2016 43.18074 2017 42.82328 2018 42.45941 2019 42.08912 2020 41.71242 2021 41.93464 2022 42.15687