Year % (national estimate) 2005 15.367 2006 14.497 2007 15.114 2008 14.971 2009 13.36 2010 13.562 2011 11.214 2012 13.27 2013 13.296 2014 11.186 2015 11.407 2016 12.84 2017 12.1 2019 15.949 2022 10.725 2023 9.453