Year % (national estimate) 2000 40.641 2001 28.69 2002 22.703 2003 26.283 2004 25.197 2005 27.338 2006 28.128 2007 28.805 2008 26.188 2009 27.169 2010 26.754 2011 31.529 2012 32.011 2013 30.809 2014 30.975 2015 33.436 2016 33.166 2017 32.202 2018 31.54 2019 32.197 2020 27.193 2021 29.691 2022 34.158