Year	% (national estimate)
2002	21.755
2003	20.674
2004	21.738
2005	21.339
2006	21.773
2007	22.262
2008	21.421
2009	21.729
2010	20.421
2011	17.197
2012	14.701
2013	12.368
2014	15.31
2015	15.753
2016	22.185
2017	21.805
2018	20.347
2019	21.88
2020	18.991
2021	20.051
2022	22.977
2023	19.534