Year	% (national estimate)
2001	30.799
2002	31.179
2003	32.381
2004	30.428
2005	30.079
2007	28.233
2008	27.61
2009	29.681
2010	30.265
2011	31.222
2012	32.539
2013	32.472
2014	32.606
2015	32.558
2016	32.159
2017	31.469
2018	29.999
2019	28.999
2020	25.571
2021	27.785
2022	27.392
2023	28.861