Year % (national estimate) 2000 44.9 2002 45.1 2003 46.675 2004 41.014 2006 49.75 2010 40.381 2011 37.603 2012 43.985 2013 38.856 2014 39.203 2015 37.489 2016 38.697 2017 37.827 2018 38.007 2019 36.734 2021 41.98 2022 39.641