Year	% (national estimate)
2007	21.4
2008	23.1
2009	21.465
2010	23.054
2011	23.966
2012	25.761
2013	24.029
2014	25.618
2015	26.75
2016	25.513
2017	31.601
2018	28.35
2019	26.52
2020	26.706