Year	% (national estimate)
1999	59.5
2000	58
2001	56.6
2002	55.2
2003	54.7
2004	56.2
2005	56.2
2006	55.6
2007	57.8
2008	57.5
2009	58.1
2010	56.9
2011	55.9
2012	54.9
2013	54
2014	53.7
2017	52.824
2018	50.851
2019	51.739
2020	50.55
2021	49.447
2022	50.589