Year	% (national estimate)
2000	18.045
2001	21.026
2002	19.594
2003	19.513
2004	19.534
2005	19.372
2006	21.016
2007	21.822
2008	23.115
2009	21.384
2010	21.246
2011	18.951
2012	18.731
2013	18.36
2014	17.273
2015	16.457
2016	16.25
2017	19.118
2018	17.01
2019	18.382
2020	15.741
2021	13.131
2022	16.141
2023	16.167