Year	% (national estimate)
2001	40.147
2003	39.07
2004	39.662
2005	39.239
2006	38.383
2007	38.221
2008	37.299
2009	37.509
2010	37.315
2011	38.986
2012	38.589
2013	37.971
2014	38.52
2015	37.034
2016	36.895
2017	34.337
2018	33.32
2019	32.401
2020	28.008
2021	28.525
2022	30.305