Year % (national estimate) 2008 43.09497533550251 2009 41.35072305833308 2010 41.158527202608695 2011 40.66828273920679 2012 41.44458428222179 2014 40.20524604015375 2015 42.0724659062561 2016 41.171681857713395 2017 42.31475339599625 2021 42.115209950038185