Year % (national estimate) 2000 30.634 2001 27.858 2002 26.813 2003 23.391 2004 21.347 2005 20.523 2006 28.324 2007 27.175 2008 29.054 2009 32.413 2010 38.527 2011 39.504 2012 40.07 2013 41.3 2014 42.865 2015 45.594 2016 42.282 2017 39.887 2018 35.434 2019 37.488 2020 36.749 2021 38.284 2022 35.832 2023 34.608