Year	% (national estimate)
1991	40.98
2002	35.595
2003	33.617
2004	34.658
2005	32.896
2006	31.62
2007	31.473
2008	29.872
2009	29.953
2010	30.746
2011	26.908
2012	25.334
2013	24.817
2014	28.545
2015	27.965
2016	32.306
2017	30.176
2018	28.823
2019	27.276
2020	25.327
2021	27.235
2022	29.716
2023	24.969