Year	% (national estimate)
2000	20.451
2001	21.056
2002	20.501
2003	21.316
2004	22.283
2005	21.641
2006	23.234
2007	24.526
2008	26.297
2009	24.765
2010	24.33
2011	22.082
2012	21.884
2013	21.237
2014	20.744
2015	20.341
2016	19.773
2017	22.899
2018	20.685
2019	21.785
2020	18.776
2021	16.816
2022	19.85
2023	18.776