Year % (national estimate) 1997 27.25 2007 21.551 2008 33.259 2011 38.959 2012 38.096 2013 39.393 2014 37.574 2015 39.471 2016 34.652 2017 35.118 2018 41.086 2019 43.764 2020 37.907 2021 34.481 2022 36.442