Year	% (national estimate)
2000	27.64
2001	23.997
2002	21.76
2003	23.971
2004	22.995
2005	23.211
2006	23.513
2007	24.734
2008	25.174
2009	24.945
2010	24.872
2011	26.838
2012	27.94
2013	27.692
2014	28.016
2015	30.878
2016	30.974
2017	31.442
2018	30.502
2019	30.266
2020	26.227
2021	28.841
2022	30.811